Mariah Carey joins line-up for Haiti charity single
Mariah Carey is the latest star to be added to the bill
Mariah Carey is the latest performer to join an all-star charity single for the victims of the Haiti earthquake.
She will appear alongside Robbie Williams, Kylie Minogue, Take That, Cheryl Cole and JLS on the track, which is a cover of REM's Everybody Hurts.
Several artists are recording their parts on Tuesday at a studio in West London. All are working for free.
Simon Cowell, who is organising the charity effort, is hoping to complete the single by 7 February.
Mika, who has already laid his vocals down, said it was a "real honour" to be taking part and was pleased with the part he had been asked to sing.
"I found out which bit I was going to be doing as I walked into the studio. I'm really happy that I have a good line that doesn't go too high because I hate singing too high," he told Radio 1's Natalie Jamieson.
The star added he felt compelled to take part because he has close friends who are Haitian.
Mika, James Morrison and Rod Stewart explain why they wanted to be part of the charity single
"They have been affected themselves, along with a lot of other people, so this has a personal meaning as well. It's for a very good cause and it's great that we can raise some money and raise some awareness."
Artists such as James Morrison and Alexandra Burke have been singing their lines at Trevor Horn's Sarm Studios in Notting Hill - where the original Band Aid single was recorded in 1984.
Williams is expected to record his parts in Los Angeles along with his former Take That bandmates.
He said: "I'm very honoured to be asked to contribute to the single.
"We can all do something to help the people of Haiti and I urge everyone to do what they can."
Minogue will add her voice from a "secret" location where she is recording her new album.
Minogue and Williams previously duetted on the single Kids in 2000
The vocals will be pieced together by producer Steve Robson, who has previously worked with Take That, Westlife and Busted.
Half of the single's proceeds will go to the Sun's Helping Haiti fund and the rest will be donated to the Disasters Emergency Committee.
Meanwhile, Radiohead have raised more than $500,000 (£308,192) for the appeal with a special gig in Los Angeles.
Radiohead performed for more than two hours on Sunday at the Henry Fonda Theatre.
Stars such as Justin Timberlake, Jessica Biel, Charlize Theron, Anna Paquin and Daniel Craig were in the crowd.
Fans had bid for tickets in an online auction, with proceeds going to Oxfam International.
And George Clooney's global telethon has so far raised $61m (£37.6m).
It is believed the 7.0 magnitude quake on 12 January killed as many as 200,000 people. An estimated 1.5 million people have been left homeless.
Some of the world's most famous celebrities, including Madonna, Jay Z, Rihanna and Mary J Blige participated in Clooney's Hope for Haiti Now telethon, which took place on Friday.
It was shown on all major US TV channels, YouTube, MySpace and on MTV in the UK.
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