There is now more than a hundred star's who've signed up to help out.
"We did the 9/11 telethon and we did the tsunami telethon. So the morning after I got a call from Wyclef, when he was on his way to Haiti, he said, 'what can we do?' Then he was sort of radio silenced for four days and while he was gone we sort of put it together," said Clooney. "There are few times in our lives that you see this kind of tragedy, even at a time when there is a great level of difficulty in our own country and economy there is great compassion for people."
Among the stars announced to participate on Friday: Alicia Keys, Christina Aguilera, Dave Matthews, John Legend, Justin Timberlake from Los Angeles.
All of the performances will available after the telethon on iTunes and proceeds will also benefit Haiti relief efforts.