Brian May live at the Long Beach Arena, Long Beach, CA, USA (Children Of The Night - KNAC 5th anniversary concert) [08.02.1991]
Long Beach Arena
Long Beach, CA
Children Of The Night - KNAC 5th anniversary concert
This is a newly discovered Brian's appearance - apparently an All-Star jam with James Hetfield (Metallica), George Lynch (Dokken), Taime Down (Faster Pussycat), Bruce Kulick (Kiss), Bob Kulick (Meat Loaf), Phil Soussan (Ozzy Osbourne) or Steven Adler (Guns N' Roses). I've never heard of this event before but there seems to be replica T-shirts and posters available so it was probably a famous concert.