U2 recorded at Wembley Stadium, London, UK. Live version of Bad includes snippets of Ruby Tuesday, Sympathy For The Devil and Walk On The Wild Side.
Led Zeppelin recorded at JFK Stadium, Philadelphia, U.S.A. Performance by Robert Plant, Jimmy Page, John Paul Jones and Phil Collins (drums).
Last track on Led Zeppelin side is clip from Innerview interview with Plant/Page from 1975.
Outer sleeve actually lists Led Zeppelin as A side and U2 as B side, but inner grooves are marked U2 71385-A and LZ 71385-B.