Last week when moe. traveled to Aspen, CO for a performance at Belly Up Aspen, the group enlisted area resident John Oates to sit-in for a few songs. Last night Umphrey’s McGee performed the second of two gigs at the venue and did the same. Oates came out during the close of Umphrey’s first set and added guitar to “Ain’t No Sunshine” and “The Linear.” The he stepped up vocals as well for the cover of Chuck Berry’s “Let It Rock.”

This evening Umphrey’s is in Denver for a show at the Fillmore Auditorium.