Bret Hrbek has seen 15 bands.

Band Concerts Seen
  Jimmy Buffett 8 concerts
  Dustin Lynch 2 concerts
  Luke Bryan 2 concerts
  Zac Brown Band 2 concerts
  Bob the Drag Queen 1 concert
  Dave Matthews Band 1 concert
  Harry Connick Jr. 1 concert
  Jason Mraz 1 concert
  Jimmy Buffet and the Coral Reefer Band 1 concert
  Little Big Town 1 concert
  Macy Gray 1 concert
  Madonna 1 concert
  Paul McCartney 1 concert
  Randy Houser 1 concert
  Santana 1 concert