Rick Nielsen makes a surprise appearance at a Revolting Cocks show.

The sold-out crowd at Chicago's House of Blues Theatre was treated to an all-star rock n' roll extravaganza on July 2nd when Cheap Trick's Rick Nielsen hit the stage for a special performance with Al Jourgensen and his band, Revolting Cocks. Nielsen was among the guests to appear on the recently-released Revolting Cocks album "Cocked and Loaded." From left to right: Al Jourgensen, Rick Nielsen and RevCo guitarist Sin.