Superstar Prince reportedly will be paid $4 million to perform at the Coachella Valley Music & Arts Festival.

The singer will headline Saturday night at the three-day music event in California, which begins on April 25.

But he was only added to the festival line-up in a bid to increase ticket sales, according to PerezHilton.com.

A source tells the Web site, "Prince was a late addition to the line-up. The promoters added him to try and sell more tickets and make up for a less than stellar, in comparison to years past, roster of performers.

"The exact amount Prince is getting paid for his Coachella performance is $4.8 million."