Big Gigantic’s Dominic Lalli will guest with Billy & The Kids at this year’s Lockn’ Festival, joining the previously announced lineup of Bill Kreutzmann, Tom Hamilton, Aron Magner and Reed Mathis.

Lalli’s guest performance serves as the latest in a long line of additions for the festival, including The Oh Hellos, Deer Tick, Steve Earle & The Dukes and many more. The newest additions will join a previously announced lineup of Robert Plant, Phil Lesh & Friends, Widespread Panic, Umphrey’s McGee, The String Cheese Incident, The Doobie Brothers and more.

Tickets for Lockn’, slated for September 10-13, are available here.