I didn't think PiL could go any more experimental than their previous albums but they did with this landmark release. It's mostly percussion based songs with John Lydon doing his weird voice thing over the top of unusual and/or repetitive drum beats. The percussion is provided by both Keith Levene and the masterful Martin Atkins so it never sounds less than amazing. There are occasional jangly guitar moments and keyboards as well. I can imagine the record execs panicking like gazelles when this went to press.