A partial lineup has been announced for Bonnaroo, the massive music and arts festival to be held June 16-18 on a Manchester, Tenn., farm. So far, the bill includes Ricky Skaggs & Kentucky Thunder, Nickel Creek, Steve Earle, Jerry Douglas, Shooter Jennings and Robinella. Among the dozens of rock and alternative acts are Radiohead, Tom Petty & the Heartbreakers, Beck, Elvis Costello & the Imposters, Bonnie Raitt and Death Cab for Cutie. Tickets go on sale on Feb. 11 at the festival’s Web site. Attendance will be limited to 80,000 this year.