Govt Mule headlined Deerfield, NCs AmJam Festival Saturday and, as expected, invited a few additional performers to sit in throughout their set. First up was The Lee Boys Roosevelt Collier, who added pedal steel guitar to a version of That’s What Love Will Make You Do. A bit later, Keller Williams also took the stage with the Mule for a cover of Buffalo Springfields For What It’s Worth. In addition, Williams also offered a solo set and performed with his friends the Keels. Govt Mule will host its own Mountain Jam this coming weekend in Hunter, NY.