Simon Cowell is is assembling an all-star lineup of vocalists to record a new charity single to help victims of the devastating earthquake in Haiti, The Sun reported Thursday.

Beyonce, Lady Gaga, Robbie Williams and Wyclef Jean are expected to contribute to the single, as are former talent show stars Susan Boyle and Leona Lewis.

“I wanted to do something for Haiti so when I had calls from The Sun and the Prime Minister asking if I would get involved I agreed immediately,” the exiting American Idol judge confirmed at last night’s National TV Awards in London. “We are going to do a single. We only made the decision today. I have got to get it together in 48 hours.”

The song is being released in conjunction with The Sun’s Helping Haiti campaign.