Over the past few years, Govt Mule has used its Atlanta appearances as an opportunity to jam with longtime Georgia resident, and sometimes Warren Haynes employer, Gregg Allman. This Saturday proved no different as Govt Mules About to Rage Tour rolled through Atlanta, GAs Tabernacle. Allman emerged at the start of Govt Mules second set, adding vocals and organ to a pair of signature blues numbers, Feel So Bad and Sky Is Crying, the later of which he covered on 2004s _ Lightning in a Bottle_ soundtrack. Allman then led Govt Mule through ABB chestnuts Statesboro Blues and Dreams. A night earlier, Daniel Sproul, who plays guitar in the evenings opening act Rose Hill Drive, joined Govt Mule onstage at the Tabernacle for Cortez the Killer.

Govt Mule continued its string on collaborations last night at Memphis New Daisy Theater. During its second set, blues-guitarist Hook Herrera appeared on 32-20 Blues and The Hunter. A bit later, Herreras bandmate, Alvin Youngblood Hart, emerged for Long Distance Call. The About to Rage Tour continues Wednesday at Washington, DC’s Constitution Hall.