WATCH: My Morning Jacket's Jim James joins Conor Oberst in Kentucky

Jim James and Conor Oberst reunited for during Oberst's gig in Lexington, Kentucky on Saturday. The pair have been longtime collaborators and the chemistry was evident when James appeared to perform 'Peace in the Valley' and eventually returned to play bass on 'At the Bottom of Everything' and 'Roosevelt Room'.

Watch the performances below.