Brad Paisley, Lonestar and Lee Ann Womack have officially signed on for the fourth annual George Strait Music Festival. The acts join Alan Jackson, who confirmed his participation in October. Also on the bill for the 2001 swing is Grammy-winning band Asleep at the Wheel, which has been along for ride since the Strait festival began in 1997. "I told George he couldn't do it without us, and he believed me," said frontman Ray Benson. The Strait tour will kick off in March, but no specific dates have been confirmed, according to a Strait spokeswoman. The festival is traditionally one of the highest-grossing tours of the year. In past years it has featured A-list acts Tim McGraw, Faith Hill and the Dixie Chicks.