- The Appearance -- The Applicators
- The Appointed Pace Sisters -- The Aquarian Duo
- The Aquarians -- The Arcanes
- The Arcangelos Chamber Ensemble -- The Archrivals
- The Arctic Turtles -- The Aristo-Kats
- The Aristokats Orchestra -- The Army Air Force Band
- The Army Air Force Training Band -- The Arrows
- The Arrows (Pop) -- The Art Of War
- The Art of Who Did -- The Aryan Aquarians
- The A's -- The Assassinations
- The Assassinators -- The Aston Shuffle
- The Aston Shuffle -- The Athletes
- The Athletic Sports Band -- The Atlantics