Elton will bring his signature red piano to the Four Seasons' ballroom in Austin, Texas on April 26, announced Andy's Web site.
He's to perform as part of the 2005 Champions for Charity Gala. It also features cocktails, an intimate dinner for 380 and auction.
Proceeds go to Roddick's foundation, which is helping local children's organisations. Tickets cost $750 each, and will be available on March 1.