The musicians donate tracks in aid of climate change and funds for disaster relief organisation
Cee-Lo and Amy planned collaboration
It's been revealed that Cee-Lo Green and Amy Winehouse had plans to record a song together.
The Bright Lights, Bigger City star has revealed that he and Amy were both working with producer Salaam Remi to try and arrange a duet, but it never came to light.
Green told E! Online: "There was a rumour that we had already recorded together. It wasn't true and I don't know where that came from. But we did grow [fond] of each other and thought we could work together."
He went on to describe his shock and disappointment at learning of Amy's death, adding that he was a huge fan of her music.
He explained: "I could listen to her and she registered to me as the real thing... It's so untimely and unfortunate. What a loss. Music has lost a daughter."
An inquest into the cause of Winehouse's death has been adjourned until October 26th after she was found dead at her flat in Camden, North London on Saturday afternoon.
Mark Ronson, Kelly Osbourne and Bryan Adams were amongst those who attended a private memorial service for the Valerie star at Golders Green Crematorium in North-West London on Tuesday.
"Music has lost a daughter" - Cee-Lo Green
Bruno Mars, JLS, Olly Murs, The Wanted, Cover Drive, Jessie J and Enrique Iglesias are just some of the stars to post messages on Twitter. Read them here.
The boys will be joined by Cee-Lo Green, Christina Aguilera and members of the Jackson family.
Cee-Lo Green is rumoured to be recording the theme song to 'Arthur'.