Taylor Swift is just one of loads celebs getting ready to raise money for the people of Haiti.
Stars like Beyonce will take part in the Hope for Haiti Now event.
Stars will be performing in lots of places across America on Friday night. The show will go out on American TV and on the internet.
It's called a telethon, where celebrities encourage viewers to give cash, while top music acts perform songs from around the world.
Beyonce will perform live from London, while Madonna will play songs from New York City.
There will also be music from Taylor Swift and Justin Timberlake.
Jay-Z, Rihanna and Coldplay are taking part too.
Hollywood star George Clooney is one of the organisers.
He said: "If I thought we could all pick up shovels and go in there and help without being in the way, I think a lot of people would do that.
"..what we can do is first and foremost, raise money."
Altogether more than 100 big names are appearing in Hope for Haiti Now: A Global Benefit for Earthquake Relief.
Meanwhile in Haiti, temporary camps are being built outside the capital Port au Prince. A massive operation to move the 400,000 homeless people into them will start in about a week.