28 June 2010.
This is the latest single from Lady Gaga's second album, The Fame Monster.
It's a bit slower than some of her previous songs, like Telephone or Bad Romance, but it has a good beat and it's just as catchy as all her other tracks.
This is a perfect song to listen to when you're hanging out with your mates on a summer's day.
This track is about Lady Gaga wanting to be by herself and she begins the song by saying goodbye to the title character, Alejandro.
Some of the lyrics seem a bit sad but the chorus is quite upbeat.
She repeats a lot of the words in the song so it's quite easy to sing along to after just one or two listens.
Will you still be humming it next week?
The chorus is really catchy and the song will definitely get stuck in your head.
You'll probably be hearing a lot of this song over the summer and it will be difficult not to sing along!
Will it make the charts?
All of Lady Gaga's songs have been hits and this one will be just the same.
Even though it's got a bit of a different sound to her other tracks it's sure to make the top 10!
"It's an amazing song, I love it so much and think it's one of her best."
Cameron, 13, Ipswich, England
"I really like it, I can remember the whole song and it is really good! 10/10."
Santosh, 11, Wallington, England
"I have this song on the CD I've had for months. I was so surprised when I realised the single wasn't even out yet. Anyway, it is a good song. The words are a bit weird but the tune sticks so 4.5 out of 5!"
Georgia, 11, Belfast, N. Ireland
"This song is OK but it's not one of her best, I have to say."
Jessica, 14, Newcastle, England
"I love it! Lady Gaga is brilliant!"
Zala, 12, Ljubljana, Slovenia
"I love her song, I can't get it out of my head."
Jobina, 9, Wrexham, Wales
"This is so good! It's quite catchy too."
Georgia, 13, Manchester, England
"It's so catchy! I always have it in my mind."
Tegan, 8, Barry, Wales
"I love it!"
Daphne, 9, London, England
"I prefer Telephone and Poker Face but I have to admit, this could be the next big hit for Lady Gaga."
Isabel, 11, London, England
"I like this song, but it gets a bit boring after you've listened to it more than once."
Beth, 11, Strachur, Scotland
"I think it is very catchy and I sing it all the time."
Megan, 11, Wiltshire, England
"I love it!"
Asmaa, 11, Birmingham, England
"Alejandro is brilliant."
Lauren, 9, Wales
"Even though this is a slow song its also very catchy. But it's not one of my favourite Gaga songs."
Sophie, 11, Wiltshire, England
"I love it! This is one of the best songs I've ever heard!"
Hannah, 9, Jersey, UK
"Gaga is my favourite! I love her new single Alejandro!"
Reuben, 8, Grimsby, England
"I love this song! I already know all the lyrics. I listen to it on repeat."
Hanifa, 10, Birmingham, England
"Lady Gaga is OK but this is terrible. This is the worst song she has ever done!"
Beth, 11, London, England
"I love this song. It's quite catchy and I can't get it out of my head!"
Annalise, 9, Weston Super Mare, England
"I love Lady Gaga's Alejandro. It is so summery."
Yiorgos, 14, Edinburgh, Scotland
"I love Alejandro! I always put it on repeat."
Aysha, 9, London, England
"It is a good song and I like it! It has a catchy tune and is as good as all her other songs!"
Ryan, 11, London, England
"This is an amazing song and is probably one of my top songs by Lady Gaga!"
Ann, 11, England
"I love this song! It's so catchy! Can't wait until she releases her song Speechless, it's amazing!"
Georgie, 13, Kent, England
"I love Alejandro! I also have all the albums by Lady Gaga!"
Imogen, 10, England
"Even better than Dance In The Dark!"
Mia, 11, Peterborough, England
"I think it's really good and different than her other songs!"
Amber, 11, Carlisle, England
"I think Lady Gaga's song is so, so good, even better than Telephone and Poker Face. I am a big fan of Lady Gaga."
Zaiinub, 13, Leicester, England
"Lady Gaga is fantastic but Alejandro is great!"
Bethany, 12, Dorset, England
"It's got a great tune. It's just like Bad Romance at the beginning and as for the rest... See for yourself!"
Isabella, 8, London, England
"I think it's pretty cool."
Kaylee, 8, Suffolk, England
"I love this song, it's much better then Poker Face and Just Dance!"
Olivia, 10, Nottingham, England
"I love this song so much. It's number two in my top 10!"
Fran, 11, London, England
"I love Lady Gaga soooo much. Little Monster for ever, and I love Alejandro. I love the tune and the uniqueness of the song and the video is just amazing. Her and Klein are fab together but she needs to do more with Nick Knight."
Tasha, 13, Gloucestershire, England
"Lady Gaga is my role model. I have all of her CDs. My fave is Alejandro. I can't wait until it's on TV. It gives something for my dad to dance to!"
Hazel, 10, Yorkshire, England
"I think it's a good song with a catchy tune, but the video is a bit weird."
Ellis, 9, Newbury, England
"She is so cool and I love this song, it keeps going round in my head. Make more like this, GAGA!!"
Zara, 10, Co. Armagh, N. Ireland
"I love this song, it's definitely one of her best."
Hannah, 14, England
"I think it's an amazing, new, summery song. It's a great dance song that gets me singing!"
Izzy, 12, Wiltshire, England
"I don't really like Lady Gaga's songs but this one is quite good. It makes you want to turn the radio up."
Hannah, 11, Surrey, England
"I adore this song. It has a great beat and the lyrics really hit home. I don't care that it is slow. It has great rhythm and Lady Gaga sticks in my memory because all her songs are so catchy!"
Lauren, 13, Somerset, England
"I love this song, it's really good. Lady Gaga is really talented but very crazy. She stands out from the crowd."
Poppy, 12, Somerset, England
"The song is different from the rest of her singles, but it's arguably her best work. It's one of her few singles that shows off her voice and the chorus is undeniably catchy. You can dance to it, it's catchy, meaningful, and it helps you get over a break-up! What more can you ask for in a song?"
Tomas, 13, Miami, USA
"I think it's a really good song, even though it's slow it's not rubbish."
Abigail, 11, York, England
"I love this song! It's so catchy and I love the bit at the start. All in all I love Lady Gaga anyway and have both her albums! This is the jam of the summer!"
Mitchell, 10, Wolverhampton, England
"I love the CD, it is a great song. I love dancing to it."
Honey, 8, Glasgow, Scotland
"I thought this Lady Gaga craze was over last year when she wrote Bad Romance, but no, she comes back with more terrible music that makes you turn off your radio!"
Richard, 11, Maidstone, England
"This song may have a different style, but it's definitely still as awesome."
Nikki, 11, Birmingham, England
"Alejandro is a catchy song and I LOVE it! Don't call my name, don't call my name Alejandro."
Zari, 10, West Midlands, England
"It's a terrible song and an even more terrible music video, sorry Gaga, it's a no from me!"
Stefani, 12, Texas, USA
"Just another rubbish song by Lady Gaga."
Ellie, 13, London, England
"I listened to it on YouTube and I don't like it."
Hannah, 14, York, England
"I think Lady Gaga's song Alejandro is a very catchy and danceable song which any person of any age could listen and relate to. It's really addictive, it's very original and a groovy tune to listen to!"
Maya, 12, Birmingham, England
"I love this song! It's slow but the chorus is amazing and catchy. Keep going Gaga! You Rock!"
Sureya, 10, Cardiff, Wales
"I love it! I think it's awesome."
Evie, 10, Leicestershire, England
"I love this single! I listen to it all the time."
Rosalie, 12, Crawley, England
"I love this song so much! Ale-ale-ale-alejandro."
Cerys, 11, East Midlands, England
"I love this song!"
Chantal, 11, London, England
"Her best song yet! It's really catchy!"
Jess, 13, London, England
"I love this song! It is really good!"
Tamara, 11, London, England
"I hate this song. It's her worst yet."
Anna, 11, Kettering, England
"I like Lady Gaga's new song, but I think Telephone is her best song."
Sophie, 14, London, England
"I don't really like Lady Gaga but this song is different. I think it's really good!"
Tasmin, 14, Labécède, France
"I didn't like this song as much as the others. I found it really boring and quite dull."
Lydia, 12, Dorset, England
"It won't be as big a hit as Bad Romance or Telephone but I really like it and listened to it before it was a single. The beginning seems strange but the actual song is unique and upbeat. I really like it!"
Olivia, 11, London, England
"The first time I heard Alejandro I loved it! I literally know all the words and I think it's a great song!"
Jayden, 11, Newport, Wales
"I am a big Lady Gaga fan. But sadly this song doesn't make me go gaga."
Morgana, 11, London, England
"I think the song is way catchy. I love all of her songs."
Veena, 11, London, England
"I love this song! It's one of Gaga's best!"
Nandita, 13, Dubai
"Her worst one yet. It's too repetitive."
Ben, 14, London, England
"I love Lady Gaga's new song, it's brilliant."
Banita, 11, Birmingham, England
"I really love Lady Gaga and this song is amazing! It's really catchy!"
Hinna, 13, Surrey, England
"This song is rubbish and boring!"
Chloe, 10, Cornwall, England
"It is so amazing."
Lauren, 11, Scotland
"I love this song! Keep going, Gaga! You rock!"
Folu, 12, Peterborough, England
"Not as good as some of her previous songs but better than Love Game and Poker Face."
Zara, 12, London, England
"I love Lady Gaga's new hit."
Anna, 9, London, England
"It's an OK song but it's just random. It's no way as good as Telephone. 6/10!"
Amy, 10, Manchester, England
"Awesome! I adore Lady Gaga, Alejandro is one of my fave songs ever!"
Beth, 11, Worcestershire, England
"Yet another amazing hit from Lady Gaga! This song is so amazing. It is catchy and very fun to listen or to dance to!"
Rebecca, 11, Lancashire, England
"I really like this song. It's a change from Gaga's usual songs. I LOVE it! Carry on Gaga!"
Selma, 13, London, England
"Alejandro is just WEIRD. I don't like it, it doesn't show her voice at all, just her personality."
Mehvish, 12, Lancashire, England
"This song is brilliant as it is quite deep and meaningful."
Summer, 13, Walsall, England
"Lady Gaga is trying too hard to be unique. I liked her first songs like Just Dance but now her videos and songs are just creepy."
Lizzie, 12, Cambridge, England
"Her new song is so cool. I love it. I listen to it every day. It's so cool, I can't wait until it comes out."
Suzie, 11, County Antrim, N. Ireland
"This is such a good song, way better than Telephone! 10/10. I can't wait to for it to come out!"
Hannah, 12, East Kilbride, Scotland
"This song rocks, it is very catchy and I can't stop singing it!"
Tigger, 11, Hertford, England
"I don't like Lady Gaga much and this song freaks me out!!"
Fawziyah, 12, Bolton, England