Entertainment Tonight.The lineup for the Coachella Valley Music & Arts Festival has been announced, kicking off with a headline performance by Sir Paul McCartney, along with acts by Amy Winehouse and other big names in music. ET has the details!The former Beatle's performance will be his first U.S. festival appearance. The festival, taking place in Indio, Calif., in April, will feature performances by more than 130 musical acts.Other acts set to take the stage at the three-day festival include TRV$ DJ-AM (the duo act of Travis Barker and DJ AM who survived a Learjet crash together last year), The Cure, and The Killers.Tickets for Coachella are available for purchase on Ticketmaster.