Chicago’s own Umphrey’s McGee are the latest addition to the lineup for this year’s Lockn’ Festival , which will take place at Oak Ridge Farm in Arrington, Virginia between September 10 -13. Today’s announcement continues a busy week of lineup additions for Lockn’ organizers, who have added the likes of Galactic, Phil Lesh & Friends and Trombone Shorty & Orleans Avenue to the bill.

[Photo by Ian Rawn]

While Umphrey’s McGee did not perform at the inaugural Lockn’ Festival in 2013, they did play the event last year. UM made their Lockn’ debut on the first night of the 2014 festival by trading off sets with The String Cheese Incident. Watch the 28-minute “Puppet String” > “Higgins” > “Puppet String” sequence that was among the highlights of Umphrey’s appearance at Lockn’ 14:

Current Lockn’ Festival ’15 Lineup

Galactic, Hot Tuna Acoustic, Keller Williams’ Grateful Gospel, Phil Lesh & Friends, Robert Plant & The Sensational Space Shifters, Slightly Stoopid, St. Pual & The Broken Bones, Tedeschi Trucks Band, The Doobie Brothers, The Doobie Incident, The String Cheese Incident, Trombone Shorty & Orleans Avenue, Umphrey’s McGee, Widespread Panic

Tickets for Lockn’ are on sale now via the festival’s website.

Check out the Lockn’ entry in our newly redesigned JamBase Festival Guide.