| The Athenians |
| The Atkins Family |
| The atl project |
| The Atlanta Centennial Mass Choir |
| The Atlantics |
| The Atomic Bitchwax |
| The Atomic Fireballs |
| The Atomic Harvesters |
| The Atomic Planets |
| The Atomics |
| The Attic |
| The Attractions |
| The Au Go-Go Singers |
| The Au Pairs |
| The Audition |
| The Audreys |
| The Augusta Choir |
| The Austin Klezmorim |
| The Australian Jazz Quintet |
| The Auteurs |
| The Authentic Art Hodes Rhythm Section |
| The Automatic |
| The Autumn Defense |
| The Autumn Offering |
| The Autumns |
| The Avalanches |
| The Avalon Big Band |
| The Avalons |
| The Avant Gardeners |
| The Avener |
| The Avengers |
| The Average White Band |
| The Avett Brothers |
| The Avons |
| The Awakened |
| The Awakening |
| The Axis of Awesome |
| The Axis Worship Band |
| The Ayoub Sisters |
| The Azoic |
| The Aztecs |
| The B-52s |
| The B-Sides |
| The B-Stars |
| The B. Swanson Quartet |
| The B.B. & Q. Band |
| The B.U.M.S |
| The B?15 Project |
| The Baboon Show |
| The Baby Bubbas |
| The Baby Einstein Music Box Orchestra |
| The Baby Loves Jazz Band |
| The Baby\'s |
| The Bachelors |
| THE BACK HORN |
| The Back Pack |
| The Backbeats |
| The Backing Tracks |
| The Backroom Boys |
| The Backyardigans |
| The Bacon Brothers |
| The Bad Boy Family |
| The Bad Plus |
| The Badlees |
| The Badloves |
| The Bailey Brothers |
| The Bakerton Group |
| The Ballroom Band |
| The Bamboo Boat Band |
| The Bamboo Team |
| The Bamboos |
| The Banana Splits |
| The Band |
| The Band AKA |
| The Band Geek Mafia |
| The Band of Heathens |
| The Band of the Black Watch |
| The Band of the Blues and Royals |
| The Band of the Brigade of Gurkhas |
| The Band of the Prince of Wales's Division |
