The choon had its first spin on BBC Radio 1 this morning, and features Mariah Carey, Take That, Kylie Minogue, Robbie Williams, Miley Cyrus, Bon Jovi, Susan Boyle, Leona Lewis, James Blunt, Mika, JLS, Alexandra Burke, Joe McElderry, Cheryl Cole, Rod Stewart and a bunch of other people I'm probably forgetting.
Have a look at some of them laying down their vocals here. UPDATE: Here's who sings what on the track (which is released digitally February 7, physically in the UK the next day):
LEONA LEWIS
When the day is long and the night, the night is yours alone…
ROD STEWART
When you're sure you've had enough of this life, well hang on…
MARIAH CAREY
Don't let yourself go, 'cause everybody cries and everybody hurts sometimes…
CHERYL COLE
Sometimes everything is wrong.
MIKA
Now it's time to sing along…
MICHAEL BUBLE
When your day is night alone,
JOE McELDERRY
(Hold on, hold on)…
MILEY CYRUS
If you feel like letting go…
JAMES BLUNT
If you think you've had too much of this life, well hang on…
GARY BARLOW (TAKE THAT)
'Cause everybody hurts.
MARK OWEN (TAKE THAT)
Take comfort in your friends
GARY BARLOW (TAKE THAT)
Everybody hurts.
JON BON JOVI
Don't throw your hand. Oh, no…
JAMES MORRISON
Don't throw your hand
JAMES MORRISON & ALEXANDRA BURKE
If you feel like you're alone, no, no, no, you are not alone…
SUSAN BOYLE
If you're on your own in this life, the days and nights are long…
ASTON MERRYGOLD (JLS)
When you think you've had too much of this life to hang on
SHANE FILAN (WESTLIFE)
Well, everybody hurts sometimes
MARK FEEHILY (WESTLIFE)
Everybody cries.
KYLIE MINOGUE
And everybody hurts sometimes
ROBBIE WILLIAMS
And everybody hurts sometimes.