Trombone Shorty and Orleans Avenue will join the lineup at this year’s Lockn’ Festival, joining recently added acts such as Robert Plant, St. Paul and the Broken Bones and Phil Lesh & Friends. Plant and Lesh will both perform two nights at the festival.

These new additions (there are more expected this week) join a previously announced lineup that features a special collaboration between The String Cheese Incident and The Doobie Brothers as well as Widespread Panic, Tedeschi Trucks Band and Keller Williams’ Grateful Gospel.

Lockn’ is slated for September 10-13 in Arrington, VA. Tickets are on-sale now.