- Aparte Modestia
- Apartment 26
- Apathy
- Apathy, M. Shinoda, and Tak of S.O.B.
- Apathy, Tak of Styles of Beyond, and Celph Titled
- Ape Regina
- Apex
- Aphex Twin
- Aphrodelics
- Aphrodite
- Aphrodite's Child
- Apocalypse 2000
- Apocalypse Theatre
- Apocalyptica
- Apocalyptica featuring Corey Taylor
- Apokalyptische Reiter, Die
- Apokalyptischen Reiter, Die
- Apollo 440
- Apollo Nove
- Apollonia 6
- Apollyon's Sun
- Apoptygma Berzerk
- Apostle of Hustle
- Apotheosis
- Appa
- Appalachian Mountain Bluegrass - 30 Vintage Classics
- Apparat
- Apparat Organ Quartet
- Appart
- Apple Jelly
- AppleShift
- Appleton
- Après La Classe
- April March
- April Stevens
- April Wine
- Apse
- AqME
- Aqnazar
- Aqua
- Aqua Bassino
- Aquagen
- Aqualab and Davis
- Aqualung
- Aqualung - B-Unique Records Ltd. (7906)
- Aquanauts
- Aquanote
- Aquarius
- Aquasky
- Aqueduct
- Aquila Rose & Idania Valdez
- Aquilon
- AR Rahman
- Ar Re Yaouank
- Ara Malikian
- Arab Strap
- Arachnoid
- Aradas
- Arafani
- ARAI
- Aramara
- Aramirè
- Aranos
- Arash
- Arbat
- Arbeid Adelt!
- Árbol
- Arbon
- Arbouretum
- Arc
- Arc In The Sky
- Arc Lab
- Arc System Works
- Arca
- Arcade Fire
- Arcade Fire & David Bowie
- Arcadi Volodos
- Arcadian Daze
- Arcana
- Arcangel
- Arcangel y De La Ghetto
- Arcangelo Corelli
- Arcansiel
- Arcanta
- Arcari, Corsi, Salis, Maras, Lattes
- Arceneaux, Mccoy, Luther
- Arch Enemy
- Archers of Loaf
- Archie Bell & The Drells
- Archie Bell and The Drells
- Archie Bronson Outfit
- Archie Hahn
- Archie Shepp
- Architect
- Architecture in Helsinki
- Archive
- Arco5
- Arcoiris
- ARCOM
- Arctic Monkeys