Mariah Carey joins Haiti single lineup

Mariah Carey has agreed to join the lineup for Simon Cowell's Haiti charity single.

The US superstar vowed to adjust her work schedule in order to contribute to the cover of REM's 'Everybody Hurts', which is being recorded to raise funds following Haiti's recent earthquake disaster.

Discussing the progress of his new project, Cowell told The Sun: "We're getting there. We have had an incredible amount of support. It's amazing these great singers are clearing their schedules to make this happen.

"I just found out Mariah has changed her schedule to be able to do this too. It says such a lot that everyone is working so hard to help Haiti. This is something that really matters to us all and I'm so grateful for the support we are getting."

A source added: "Mariah was brilliant, she wanted to help in any way she could. Her name gives the single another great boost."

It is thought that Miley Cyrus also signed up to take part over the weekend. Meanwhile, Cheryl Cole, JLS and Leona Lewis are believed to have already recorded their vocals.