JLS, Emeli Sande and Labrinth to duet with fans

The ultimate karaoke session! JLS, Emeli Sande and Labrinth to duet with fans

They're three of the biggest names in the UK charts right now and are eagerly waiting to hear if they're nominated at this year's Brit Awards.

And as they gear up for the biggest night of the music calendar, the three acts have teamed up with Mastercard to give something back to their fans… a personal karaoke session.

Newcomers Emeli Sande and Labrinth and chart stalwarts JLS, among others, will all duet with a lucky fan.

Surprise! Emeli Sande surprises fan Alice Ella during a karaoke session for the Mastercard Priceless Duet Competition

Surprise! Emeli Sande surprises fan Alice Ella during a karaoke session for the Mastercard Priceless Duet Competition

Scottish singer Sande, 23, stunned fan Alice Ella, 22, from Horsham, when she turned up during a karaoke session with friends.

Blonde-haired Ella was singing Sande's big hit Heaven when the pop star sneaked in beside her and started singing along.

But Sande will also be singing with another lucky fan who enters the competition, which launched last night.

Don't mention I'm here: Sande sneaks up behind Alice, who is blissfully unaware of the celebrity guest in the room

Don't mention I'm here: Sande sneaks up behind Alice, who is blissfully unaware of the celebrity guest in the room

Sande, who has been named the Brit Awards Critics Choice this year, enthused: 'Singing a duet is such an exciting
experience. It’s great to be able to share that experience with one of
my fans.

'To be able to sing with someone that has supported me is such
an exciting opportunity; I can’t wait to meet them.'

Rapper Labrinth also surprised buskers Philip and Alex Worthing, who were performing his No.2 hit Earthquake on London's Tottenham Court Road.

Oh my God: Alice is stunned when she realises Emeli is singing with her

Oh my God: Alice is stunned when she realises Emeli is singing with her

The Hackney, East London-native said: 'I'm a total music geek, I love trying
new things and am always thinking about the next way I can express
myself.

'Singing with a fan is a totally new experience for me and I am
really looking forward to seeing what fresh sound they bring to one of
my songs.'

Also taking part in the competition are boy band JLS, who will no doubt be inundated with entries from their young female fans.

Whose that boy bringing up the rear: Labrinth sneaks up behind buskers Philip and Alex

Whose that boy bringing up the rear: Labrinth sneaks up behind buskers Philip and Alex

Bandmember Marvin Humes said: 'Our fans are the best out there, they
are so supportive of everything we do and they’ve been there right since
the beginning; without them we wouldn’t be where we are so we jumped at
the opportunity to do this.

'We are looking forward to taking on the
Simon Cowell role and being the judge! We can’t wait to sing with the
winner and make them an honorary member of the band for the day.'

To take part, fans need to register at somethingforthefans.co.uk and could be given the chance to submit an audition video of themselves performing a song by their favourite act.

Surprise! Labrinth starts performing his track Earthquake with the busking duo

Surprise! Labrinth starts performing his track Earthquake with the busking duo

A new group Perhaps Alex and Philip will get a role on Labrinth's new tour

A new group Perhaps Alex and Philip will get a role on Labrinth's new tour

The video will then be judged by a panel, including members of
the star’s management team

The lucky winners will
not only appear in The BRIT Awards 2012 TV idents broadcast on 21st
February on ITV1, but will also receive a pair of VIP tickets to attend
the glittering BRIT Awards ceremony at the O2 Arena, as well as an
invite to the official after party

To find out more, visit www.somethingforthefans.co.uk.

Who will they be singing with Boy band JLS will duet with one lucky winner

Who will they be singing with Boy band JLS will duet with one lucky winner

DM.has('rcp','BCVideo');

DM.has('rcp','BCVideo');