Photo via Ben Harper’s Facebook page

Ben Harper and blues harmonica ace Charlie Musselwhite celebrated the release of their new collaborative album Get Up! with an intimate show at New York’s Irving Plaza last night. The musicians—who have been teasing a formal studio collaboration for a number of years—offered a selection of material off Get Up! as well as select songs from their respective solo catalogs.

In addition, a few guests sat in with Harper and Musselwhite during the night. Noted rock photographer Danny Clinch took the stage to engage in a harmonica duel with Musselwhite during Harper’s “When It’s Good.” (The song original appeared on 2003′s Diamonds On The Inside.) Later in the night, Warren Hayes took the stage for a cover of Led Zeppelin’s arrangement of “When The Levee Breaks.” Before the Gov’t Mule/Allman Brothers Band guitarist emerged, Musselwhite mentioned that he first bonded with Haynes on the H.O.R.D.E. tour. Harper and Haynes are also old friends who have collaborated numerous times over the years.