As Grace Potters tour with Govt Mule has progressed, the new friends have continued to collaborate on a mix of classic rock covers. Last night, at Los Angeles Henry Fontana Theater, Potter took the stage with Govt Mule for a cover of Stevie Nicks Gold Dust Woman. On Wednesday Potter also performed with Govt Mule at San Diegos 4th & B on version of Al Greens Take Me to the River, one of their most popular collaborations this fall. The two groups will likely collaborate once again at San Franciscos Fillmore Auditorium this evening.