| Abbreviation | Definition |
|---|---|
| BSO | Baltimore Symphony Orchestra |
| BSO | Banda Sonora Original |
| BSO | Bangkok Symphony Orchestra |
| BSO | Bangor Symphony Orchestra |
| BSO | Beaverton Symphony Orchestra |
| BSO | Boston Symphony Orchestra |
| BSO | Bournemouth Symphony Orchestra |
| BSO | Brevard Symphony Orchestra |
| BSOM | Butler School of Music |
| BSP | Beef Storm Posse |
| BSS | BlackSheepSound |
| BSSO | Ball State Symphony Orchestra |
| BST | Blood Sweat & Tears |
| BST | Blood Sweat and Tears |
| BSTL | Been Smoking Too Long |
| BTAT | Band That Allow Taping |
| BTBAM | Between The Buried And Me |
| BTBB | Beating The Bully Blues |
| BTBG | Beyond Terror Beyond Grace |
| BTBT | Band To Band Tunneling |