- The American Twisters -- The Amishland Stringband
- The Amity Affliction -- The Amsterdam Baroque Orchestra
- The Amsterdam Headliners -- The Ancho-Cheatham Project
- The Anchor Boys -- The Andre Previn Orchestra
- The André Sisters -- The Andychrist
- The Angel -- The Angelica Quartet
- The Angelico -- The Angry String Orchestra
- the Angryband -- The Anix
- The Anjali Quartet -- The Anointed Voices of Praise
- The Anointed Voicez -- The Ant Farm
- The Antagonists -- The Antipatterns
- The Antique Harmoniums -- The Apache Relay
- The Apaches -- The Apes