Billlangdon has seen 73 bands.

Band Concerts Seen
  Frank Zappa 4 concerts
  New Riders of the Purple Sage 4 concerts
  Yes 4 concerts
  Dave Mason 3 concerts
  Grateful Dead 3 concerts
  King Crimson 3 concerts
  Quicksilver Messenger Service 3 concerts
  Commander Cody and His Lost Planet Airmen 2 concerts
  Faces 2 concerts
  Foghat 2 concerts
  Hampton Grease Band 2 concerts
  Head Over Heels 2 concerts
  Malo 2 concerts
  Rod Stewart 2 concerts
  The Allman Brothers Band 2 concerts
  The Band 2 concerts
  Atomic Rooster 1 concert
  Billy Joel 1 concert
  Black Sabbath 1 concert
  Blondie 1 concert
  Bob Dylan 1 concert
  Boz Scaggs 1 concert
  Brinsley Schwarz 1 concert
  Bruce Springsteen 1 concert
  Bull Angus 1 concert