From the Sled Zone in Richmond, Va., comes this hourlong 1990 concert by thrash-metal band Gwar, which is known for its spectacular stage performances, along with its raunchy satire that lampoons everything from politics to celebrities. Tracks include "Technosong," "Black and Huge," "The Years Without Light," "Dead Dog," "Americanized," "Maggots," " Love Surgery," "Sick of You" and "Cool Place to Park."