Watch Tool Dust Off Brooding Deep Cut 'Sweat' Live

Tool hauled out an extremely deep cut, 1992’s “Sweat,” during a recent performance at San Francisco’s Bill Graham Civic Auditorium. The prog-metal veterans surprised the crowd with the Opiate track, which they hadn’t played live since 1998, during their January 7th show, Loudwire reports.

Fan-shot footage from the gig, the second date…