South Park’s Matt Stone joined Primus on drums for a King Crimson cover in Los Angeles this week – watch footage below.

South Park co-creator Matt Stone joined Primus on drums for a cover of King Crimson's "Thela Hun Ginjeet" in Los Angeles on August 6th.

Les Claypool led Primus and their new drummer through an epic Phoenix setlist including "Pure Imagination" and the tour debut of "John the Fisherman." ...