By Damian Jones
Newsbeat music reporter
Coldplay have admitted that they are "excited" about the prospect of scoring their first ever number one UK single this weekend.
Early sales of Viva La Vida, the title track from their fourth album, suggest that the band could finally shoot to the top of the singles chart on Sunday.
The song was available to download before this week to those pre-ordering the band's album.
Chart rules prevented it from counting towards the top 40 until Monday.
The track has already given the band their first number one in the US after it shot straight to the top of the Billboard Hot 100.
The last British rock band to top the US chart was Def Leppard who reached the top spot with Love Bites 20 years ago.
Coldplay came close to scoring their first number one in the UK in 2005 with Speed Of Sound but they were denied by Crazy Frog's single Axel F.
Guitarist Jonny Buckland is hoping Coldplay can go one better this time.
He told Newsbeat: "I'm quite excited about it actually. I can't really believe it but then it's probably not going to happen anyway, is it?"
The band have played three free gigs for their fans this week including a show at Brixton, Barcelona and the BBC Television Centre.
"It's been really fun playing these free gigs and it's nice to come back like this because there's not too much pressure," he admitted.
"You don't have to be great if nobody is paying any money."
Coldplay tour the UK in December after gigging in the US and Europe
The Coldplay guitarist also said the band decided not to play any festivals this year because they felt it was too soon.
He added: "We thought about coming back and doing the festivals but we wanted to leave it this year because it feels like we've only just done them.
"You can't just keep coming back ploughing the same furrow.
"As for next year we're not sure at this stage because we have only planned up to our UK tour in December which I'm really excited about because it's a long time since we've done a full tour."
He went on: "I never initially liked playing the big arenas and I much preferred intimate gigs like the ones we've played this week.
"But now that we haven't done big arenas for a while I'm kind of missing it so it'll be good to go back and play them especially in Liverpool because it's near my hometown."