X Factor bosses have admitted tweaking the voices of some contestants when putting together the audition programmes.
This means the voices you heard on your TV at home could sound slightly different to the one the judges heard on the day.
Computer helps Leah to sing
A spokesperson for The X Factor wouldn't go into detail but said: "The footage and sound is then edited and dubbed into a finished programme, to deliver the most entertaining experience possible for viewers."
They said it's a normal part of the editing process - but some fans are angry.
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"I think it's just disgraceful. The bosses should be ashamed of themselves."
Jason, 12, Dumfries and Galloway, Scotland
"It's just wrong because the people who get to the live shows will get bad comments from the public because they sang better in the audition!"
Rebecca, 12, Lancashire, England
"It is wrong but it's not like they're making a good singer sound bad. It's only some small edits, which, when they sing live, will probably be very difficult to notice."
Angela, 12, London, England
"I don't think it should be allowed, because the viewers at home need to know what people really sound like."
Yinka, 12, Reading, England
"They should tweak everyone's voices instead of just one or two contestants. Once they do get famous, they do get their voices tweaked in the music videos anyway, but in my opinion, its very unfair."
Nivetha, 12, London, England
"If they tweak the voices of singers, what will happen next? They'll end up changing their voices completely to suit what the singers look like."
Chloe, 10, West Yorkshire, England
"It isn't right but at least they have admitted to doing it."
Juliette, 14, London, England
"I don't think they should do it because it is a singing competition. We vote for who we want and we would like to know if we are voting for a person that is good at singing."
Erin, 8, Kent, England
"I don't think it's the right thing to do because we want to listen to the actual voices of the people auditioning!"
Lydia, 11, Shropshire, England
"It is terrible but at least they are admitting to the fans that they have done it."
Juliette, 14, London, England
"I don't mind. It makes the show a lot better. It might disappoint the singers but it doesn't disappoint us."
Max, 11, Wigan, England
"I don't think they should tweak peoples voices. It makes the whole competition unfair and it isn't people's real voices."
Charlotte, 11, Kent, England
"I don't think it's fair for me and the rest of the world to be sitting on our couches thinking she or he is a good singer, when the truth is they are not as good as you think."
Katelyn, 10, UK
"Your voice is your voice. They should not change it just because they are on TV!"
Ellie, 11, Hampshire, England
"I think it is unfair! It is unfair for the people watching at home and the contestants."
Megan, 13, Hertfordshire, England
"I don't think that they should tweak the contestants' voices because then the people that are watching won't know how they actually sound and if they are good or not."
Amal, 11, Berkshire, England
"It's unfair that we can't hear the people's voices. Let the people at home listen to the people's real voices."
Chloe, 9, London, England
"No, they shouldn't, because the people at home want to hear what they really sound like as well! It's not fair!"
Ursula, 10, Highland, Scotland
"That is so unfair. When I watched the X Factor I thought they were great singers but now I don't even know what to think!"
Charis, 9, Essex, England
"I am so angry. I don't think I will watch the X Factor auditions because they aren't their real voices!"
Davinder, 11, Wolverhampton, England
"I think that it's wrong to have their voices tweaked as it ruins our TV viewing. It's just so annoying to think that they even want to tweak their voice to make it sound better. A natural talent is a natural voice that sings with pleasure not the guilt of cheating."
Laura, 12, Norwich, England
"Aha! Just wait until they become famous and have to sing live, what are they going to do then eh?"
Jessica, 11, Southampton, England
"I think that they should just let people sing in their natural voice. That would be more entertaining."
Sarah, 9, Cumbria, England
"I don't think they should tweak the vocals- it just makes everything pointless."
Emily, 13, London, England
"No! That would be unfair."
Gabbie, 6, London, England
"It's as if the people running The X Factor want to deceive the viewers."
Sophie, 13, London, England
"No, I don't think they should do it."
Anya, 10, Wallonia, Belgium
"It's not fair on the people who sing without tweaks on the programme. What if they were tweaked to sound bad."
Jack, 12, Antrim, N. Ireland
"I think it is ridiculous that the show is tweaking performers' voices, as after all, it is a talent show and should be judged on pure talent, not what you sound like with adjustments."
Abby, 14, Devon, England
"I think that if we don't hear the proper voices, then we will vote and the singers will become pop stars, when actually they aren't that good."
Becca, 11, Somerset, England
"I don't think people should tweak their vocals because it's unnatural."
Monique, 10, Leicester, England
"The X Factor is a talent show and if they tweak the contestants' voices then we wouldn't get to actually hear their talented voices."
Aleesha, 12, Manchester, England
"Of course not! It's not their natural voice, and it's really silly to try and make them sound better. In my opinion, it just make them sound worse, because it's fake. When I was watching the X Factor on Saturday I could really hear the autotune. It really didn't sound good!"
Maisie, 10, Cambridgeshire, England
"I don't think that they should have voice tweaking machines because everybody's voice is different and they cant tweak their voice for the rest of their life."
Eliza, 12, Brampton, Canada
"People say that it is less embarrassing if your voice is tweaked because you will be humiliated less, but I think that it adds to embarrassment. How would you feel if your voice was changed!"
Heather, 14, Berkshire, England
No way, that is cheating. We wouldn't know if they're good or not."
Zofia, 8, East Sussex, England
"I think it is really stupid, editing the vocals of some great singers. I know a lot of producers edit vocals for albums and things but for a show as big as The X Factor it is really pointless because auto-tune doesn't always make you sound better."
Ashley, 14, Durham, England
"I think it is awful! It is meant to be all about natural talent."
Julia, 13, England
"NO WAY!!!! What is the point of watching it if it is not real talent!"
Whitney, 12, Lincolnshire, England
"This is unfair because we want to hear the real voices, not fake ones."
Victoria, 11, London, England
"I think that it is unfair that they tweak their voices as it makes people think that they are worse singers than they actually are. I'm sure that the contestants are nervous singing in front of about 3,000 people and the judges."
Rachel, 12, Belfast, N. Ireland
"The X Factor should not mess with people's vocals because you want to hear real people's voices not fake stuff. It's not very fair!"
Stephanie, 9, West Midlands, England
"What's the point of changing the voices? Their actual singing is what's meant to be the entertaining part!"
Jonathan, 11, Preston, England
"Of course they shouldn't! When it comes to the live shows they won't be able to do it so they will seem worse than they were in the auditions. Also the auditions shouldn't be in front of an audience."
Andrew, 11, Berkshire, England
"I don't think they should do that because we want to hear how they really sing. The rubbish ones might sing well and the good ones might sing badly."
Wilf, 7, London, England
"I don't even like the auditions being watched by an audience. I liked the old auditions where only the judges watched. It's unfair for the people to have their voices tweaked because it'll make them think they're bad singers."
Ashling, 13, Northamptonshire, England
"I don't think it is all that bad. If they are good singers they only change their voices to make them sound MUCH better but if they can't sing, they do not bother changing the voices so what's the problem? The good singers will still get through no matter if you change their voices or not and the bad singers don't get through."
Georgina, 13, Herefordshire, England
"Their voices should not be tweaked because if I auditioned I would feel quite hurt because I would think I was a bad singer. Also, the public watching it at home would not be impressed with X Factor and they would probably lose viewers, rather than gain more!"
Rebecca, 14, Hampshire, England
"I don't think it's right that they can tweak the contestants voices, that's not what the show's about. The contestant might be made to feel like the judges and editors don't think they're good enough on their own and that they need the tweaking. Surely that'll just knock their confidence right down.
Bronwyn, 13, Wales
"I think that the contestants' voices shouldn´t be tweaked. Not everyone has the courage to sing in front of thousands of staring eyes and giggling faces."
Gaby, 8, South Wales
"What's the point of a singing contest if the producers change the contestants?"
Herbie, 9, Cardiff, Wales
"I think they should NOT because then we don't get to hear their real voices!"
Alice, 11, Perth and Kinross, Scotland
"We should be able to hear their real voices because when we are voting for them we can tell what their voices sound like."
Gracie, 12, York, England
"I don't think they should because it's a talent show so it doesn't really count. It's unfair."
Izzy, 10, Powys, Wales
"I think this is wrong because we don't get to hear the real voices of the people that audition!"
Harprit, 13, London, England
"It doesn't hurt anyone but nobody hears their real voices except the X Factor judges and since it's a talent show they shouldn't do that."
Kate, 9, Derby, England
"If the voice is not the same, then how are we supposed to know the real voice?"
Elsamina, 12, London, England
"What's the point of a talent contest if all they're going to do is tweak the voices? The contestants should be able to know that it's their voice that got heard by the nation, not some computer's tweaking. It would be OK in a movie or something, but not a SINGING contest."
Amanda, 10, Wiltshire, England
"That is terrible. People should be recognised in a talent show by how their voices sound, not what people want them to sound like."
Madie, 10, Cornwall, England
"Everyone wants to hear the proper voices of the worst and the best performers."
Harry, 9, Huddersfield, England
"It's all done to get publicity. I feel sorry for the contestants."
Marie, 12, Edinburgh, Scotland
"They shouldn't change them when the whole programme is about the voices!!"
Maria, 10, London, England
"I don't care if they are tweaked. At least they are singing."
Katie, 11, North Lanarkshire, Scotland
"Something about the singers makes you still want to here them because they sound awful!"
Neve, 12, Cambridgeshire, England
"It shows they cant really sing at all."
Hinna, 13, Woking, England
"It's funny and entertaining to hear the people who don't have the best vocals, that what makes it good to watch, it makes the show better."
Ellie, 12, Derby, England
"That is terrible! They should at least ask the auditionees before they do it! If they make the bad ones sounds worse than they are, it's cruel! People could make fun of them etc."
Emily, 11, Kingston, England
"We still want to hear their own voices."
Niamh, 10, Inverness, Scotland
"I think it shouldn't be allowed. We want to hear the real voices, not he studio ones!"
Jenny, 12, Bradford, England
"What's the point of changing the voices, when the programme is about voices!!"
Chantal, 11, Essex, England
I think it's terrible that they have done that, but it's good that they've admitted to doing it. If people are good they should get recognised for their own talent not the people who edit the voices!
Eve, 12, Cheshire, England
"This isn't a good idea. As Charlie from Norfolk said, the fans may be disappointed as the auditionees' voices will have changed. It simply isn't good enough. Something must be done to prevent things like this happening again!"
Ellie, 10, Wiltshire, England
"I don't think they should. You should just respect the fact that they can sound bad."
Noor, 12, London, England
"I don't think they should. When someone is performing I think they should know that the talent, in their heart, is being appreciated and not some sound tweaked by a computer."
Victoria, 10, Worcestershire, England
"I think it is wrong because you can't hear the real sound."
Georgia, 9, Southend on Sea, England
"What's the point in watching people sing if we don't know what they really sound like."
Jasmine, 11, Essex, England
"Tweaking it is a bad idea! You won't hear their real voice, you're just hearing the computers sing for them! It's not a good idea and it should stop. X Factor is meant to find NATURAL talents."
Bethy, 12, Brittany, France
"It's bad, because the theme is "talent shows." It's not talent if you change their voices."
Grace, 8, Cambridgeshire, England
"I think that as long as they don't make good voices sound bad and bad voices sound good. Anyway, they only said they did that for some contestants."
Emily, 12, Leeds, England
"I think we should hear exactly what the auditionees sound like on their audition. It is not right and not fair."
Caitlyn, 10, Windsor, England
"If it's a singing competition, tweaking vocals is basically cheating!"
Will, 11, Salford, England
"I don't think that they should be tweaking the X Factor contestants' singing because they could be making them better than they are."
Emma, 14, Fife, Scotland
"I think tweaking the singers' voices is wrong because I think if you're a bad singer, you're a bad singer!"
Charlie, 9, Dubai, UAE
"It doesn't really matter in the end because it's only the auditions and it's the judges who are making a fair decision right now. But you can be entertained by bad singing I know, so by tweaking vocals, you can't separate good from bad. When the live shows are on you'll make the choice."
Amy, 13, Worcestershire, England
"Even if they are bad singers you still like to see what the sing like so I don't think they should."
Ellie, 8, County Londonderry, N. Ireland
"I think it's totally wrong, because it is deceiving viewers and their opinions on the contestants. As a singer myself, I would find it quite offensive if someone wanted to tweak my vocals! If they can do that, I wonder what else goes on..?"
Lucy, 13, London, England
"You never know how it could hurt the people who had their voice tweaked because they now know that people have not heard the real thing and they could be heart broken."
Rebecca, 11, Stoke-on-Trent, England
"I think they should not tweak the voices because we need to hear how they really sing."
Sunarie, 11, Cheshire, England
"I don't think that they should have tweaked the vocals because if their voice sounds more terrible than it actually is then it's very embarrassing for the person and people will start judging them."
Pheobe, 12, London, England
"I don't think that they should tweak the voices because if they get to the live show and we listen to their voice, it may be bad."
Weronika, 11, Nottingham, England
"I think that they shouldn't change people's voices because you want to hear the person for who they are."
Amelia, 11, Surrey, England
"If they tweak the voices in the audition and they sound great, what about in the live shows? If they sound horrible it'll be confusing. They should stop, it's not good."
Tahliya, 11, London, England
"What's the point of watching a talent show when we don't actually hear their real talent?!"
Cheryl, 13, Glasgow, Scotland
"They should not tweak the vocals because it spoils the whole show. If, when they tweak it, the contestants sound good then it's not the truth and they have nothing to work on. I don't know why they bother to do it!"
Laura, 14, Birmingham, England
"I don't like the tweaking because we should be hearing what they actually sound like."
Jamie, 11, London, England
"I don't think they should tweak vocals because people won't like them then!"
Aisling, 10, Dublin, Ireland
"I don't think the tweaking of the voices is good for the contestants who get through to the live shows because you can't tweak a live performance. The viewers of the X Factor might not vote for the person they had been supporting because they don't sound as good live."
Orla, 11, Newcastle, England
"Someone with talent should show it naturally."
Mykela, 6, Wirral, England
"I think that the X Factor shouldn't tweak people's vocals because we all want to hear what they really sound like and if they have really got talent."
Maddy, 11, Gloucestershire, England
"I don't think they should do it because it's not really fair. If they aren't good then they will keep singing but people will not want to listen to them."
Briony, 9, North Lanarkshire, Scotland
"I think it's cheating and it should not be allowed."
Aminah, 10, Walsall, England
"So they try and make it more 'entertaining'? It's the public who vote, they should know what people really sound like!"
Megan, 12, North Yorkshire, England
"I think that it's not fair because the better singers get the voice effects and the bad ones don't."
Rebecca, 11, Newcastle, England
"That's not very good! They should let all the contestants sing with their own voice instead of giving them a fake one, even if they're not the best singer in the world!"
Abi, 10, Hampshire, England
"I don't think they should have used computers to make their voices better because it is not fair."
Emma, 7, Edinburgh, Scotland
"I don't think that you should tweak vocals because if their voice isn't as good as it seems expectancy will take over and nerves will get the better of them!"
Aaron, 11, Lincolnshire, England
"I think it's very unfair that you have to go to the live show to hear what they really sound like. I don't think they should do it at all."
Katelyn, 9, England
"That is terrible. Why should we not get to hear the real voices? We love to hear people's voices, good or bad, that's part of the fun."
Imaan, 10, London, England
"I think that they should tweak their voices because otherwise they will humiliate themselves if they are really bad singers. On the other hand they shouldn't because it is not fair to the public who want to hear the real voices."
Abbie, 11, Leicester, England
"So what if they tweaked the voices a little? They judge on what they hear, not what we hear on. So why bother moaning?"
Luke, 14, Portsmouth, England
A lot of music today is autotuned and fake, but when someone amazing comes along like Gamu, it is incredibly sad to see that they have to autotune her. Her voice sounded good but very artificial. It would have sounded even better than it did if it wasn't autotuned. I back Gamu all the way though, I hope she wins!"
Bonnie, 12, Isle of Wight, England
"X Factor should not tweak the vocals because it is a show to see what talent people really have and we all want a winner that is good at singing. I think people will stop watching the X Factor now because it is a fake programme and a waste of time to watch."
Emma, 12, Leicester, England
"I think it's awful. If it's a talent show it should be based on raw talent instead of computerised fakes just to make it more entertaining. It's all ready entertaining enough as it is."
Rosie, 11, Nottingham, England
"I don't think they should be able to do that because the people who we think are bad might be good and they are not getting the opportunity."
Olivia, 9, Hertfordshire, England
"I think tweaking people's voices is horrendous. You should respect people for who they are, however good or bad a singer they are."
Ellie, 10, Bristol, England
"I think it does matter because it makes me feel like I am being isolated from the show I love. It feels like they are lying to us and it will be really hard to trust what they say again."
Abey, 13, London, England
"I personally think that it isn't fair because the comments from the judges won't really mean anything, if their voices sound different from what they really are. Also, it's not fair on us really."
Lois, 13, Bristol, England
"I think they should because they will sound better."
Susan, 7, Glasgow, Scotland
"I think that it ruins the point of it. Surely talent show are to FIND talent not to take people that have no talent and make it sound like they do?!"
Victoria, 12, Cheshire, England
"It is so wrong, it means that we think they are good when they could actually be bad! But it doesn't affect my views on the programme as either way I find it very entertaining and without it we would not have JLS, Leona Lewis or Alexandra Burke!"
Lauren, 13, Somerset, England
"I'm not sure. If I entered the X Factor I wouldn't want my voice tweaked even if I had a dreadful voice."
Shona, 10, London, England
"I think that it is not fair that a talent show tweaks vocals because it makes the contestants nervous on stage if they think that that is not how they sing. On the other side it does make it very entertaining for the audience and they do tweak vocals when you are famous so it is fair that way."
Mathura, 13, London, England
"I definitely think that they shouldn't tweak voices because I love to listen to bad voices They are so funny!"
Aalana, 10, Nottingham, England
"I think that this is shocking as we want singers that are good and can actually sing and have a future. This way they are living a lie and they may not get any fans when they win or in the live shows and then it will be a waste of time and effort for everyone!"
Kirby, 14, North Yorkshire, England
"I think this is outrageous. This is a talent show and even though this is a 'make your voice better' show, you should make your voice better by coaching, not hi-tech computers."
Emily, 11, London, England
"I think that they should let us hear how they really sing."
Eden, 8, Calderdale, England
"I think it is unfair as it is a talent show and all it's showing is the talent of the sound producers."
Robert, 12, Birmingham, England
"Talent shows should NOT tweak vocals because it isn't fair to the public. The public wants to hear the true vocals, not tampered vocals! The public may also be disappointed with the real vocals when it comes to the live shows because some contestants will sound different."
Charlie, 14, Norwich, England
"I think it's unfair because we don't get to really hear their own voices so it can't be judged fairly when the public vote. As long as the judges are actually hearing them for who they are though, it's fine."
Charlotte, 12, Surrey, England
"I think it is fine because they want to make people watch the show."
Henry, 11, Birmingham, England
"What's the point in tweaking them in the auditions if we are going to hear how bad or good they really are in the live shows anyway?"
Lex, 14, West Lancashire, England
"I don't think they should be allowed to tweak their voices as it is a talent show."
Madura, 10, London, England
"I think it's fine to tweak voices as it emphasizes how good or bad a singer is and makes the show more interesting for the public. But I think they should get the singer's permission."
Judy, 10, London, England
"I personally think it is ridiculous that at an audition you would even think twice of using a computer to change someone's voice. You want to hear how well people can sing on their own, not how a computer can change your voice!"
Paige, 12, London, England
"I think they shouldn't mess with their voice because I think the public would prefer the real thing."
Francesca, 10, Berkshire, England
"I think that they should tweak the voices a tiny bit to save the person, if they're bad, from embarrassment but they should only tweak slightly."
Thomas, 10, Lancashire, England
"I think that it is unfair that they do that because people might judge them by the voice which isn't even theirs!"
James, 12, Birmingham, England
"I don't think they should do that because people at home want to hear what they really sound like, not an edited version."
Elle, 10, Swindon, England
"Talent shows shouldn't tweak vocals because it doesn't matter how the contestants sound to us at this stage anyway so we should get the chance to see some people sing. It's also not fair to the singers who are being tweaked, when they hear themselves they could think they are better than they are and get false hope."
Roxie, 10, Leeds, England
"I don't think X Factor should be tweaking the contestants' voices because we don't actually know how they sound. They could sound terrible but they were made to sound amazing."
Hannah, 13, Aberdeenshire, Scotland
"I don't think that they should tweak the voices because we don't know what they sound like in real life."
Will, 12, Reading, England
"I don't think it's fair as it's called a talent show not a fake voices show!"
Jack, 8, London, England
"I think that it's OK just now because it's the judges that are voting and not the audience!"
Ross, 12, Glasgow, Scotland
"I don't think they should tweak their voices because it's unfair for the contestants and for us as we don't get to hear what the judges heard."
Christie, 10, Surrey, England
"I think that it doesn't matter that the voices are being changed because it's an entertainment show and it wouldn't be entertaining if everyone was just average at singing."
Harriet, 12, Gloucestershire, England
"It's not fair because X Factor is about singing, not cheating."
Ali, 10, Surrey, England
"I don't think that it's fair. You're on a talent show to have talent. We should hear their proper voices, not what they sound like after they're mixed and messed around."
Olivia, 13, York, England
"I think it's wrong that they are doing that. You should be able to hear the contestants for who they are."
Steph, 14, Wigan, England
"I don't think they should change the voices because it can make us believe that they are really good when they are not!"
Sara, 13, Lincolnshire, England
"No way should they tweak! Viewers want to hear exactly what the judges hear so that we can say what we thought about the REAL acts on the stage!"
Estella, 12, Berkshire, England
"Tweaking should be stopped. If you can't sing, you can't sing. Also, it puts pressure on kids to sound really amazing. Sort it out X Factor, we want some REAL talent, not fake talent."
Georgi, 11, Norfolk, England
"This isn't very good for X Factor but this wont stop anyone from watching it!"
Jasmine, 12, Plymouth, England
"It's really bad that they make the people's voices at auditions change. I think they should just leave the voices alone and let the people give their own voices to the world instead of the made up ones. It isn't fair. If they made their voices good then we would think they're great but really they might not be."
Amy, 9, Manchester, England
"That's wrong. People that are good should be shown as they are, not better. If they're bad, they shouldn't be tweaked to make them sound better."
Olivia, 13, Derby, England
Hannah, 8, Worcestershire, England
"I don't think we should all exaggerate over it but I think that X Factor is a money maker and Simon Cowell and all the other judges are just cheating. This is suppose to be a competition, not a cheating competition. It's not a talent show now!"
Isabelle, 10, Manchester, England
"I don't think that they should tweak the singers voices because it gives the viewers at home the wrong idea of what they sound like."
Beth, 10, Aberdeen, Scotland
"NO WAY should this happen. People at home could be calling in to vote for someone we think is really good, when actually, they're really bad. There's our money gone down the drain!!"
Nicola, 11, Sandwell, England
"I think it's wrong to tweak because you cannot truly hear their real voices and it won't really be fair."
Nihal, 8, London, England
"The X Factor is just a money maker for Simon Cowell and the judges. It isn't a talent show."
Ben, 12, London, England
"I think they should tweak them, because when they're famous they do it."
Rebecca, 11, Whitley Bay, England
"I won't watch it anymore because you don't know if they are changing it, so I will never watch it again."
Jenni, 10, London, England
"I think they should leave the voices as it is cos we vote for the people and i don't think its fair!!!!!!"
Chloe, 11, Barking, England
"I don't think they should tweak the voices at the auditions because even if they sound terrible, we should be able to hear their proper voices and not an altered voice. xx :)"
Georgia, 10, Essex, England
"That's wrong. People that are good should be shown as they are, not better. And vice versa. If they're bad they shouldn't be tweaked to make them sound better. This also makes me think that if they're bad does the X Factor make them sound worse to get the viewing figures up?"
Olivia, 13, Derby, England
"No, that's terrible! They should show people as who they are, even if they aren't good!"