| Abbreviation | Definition |
|---|---|
| BLG | Brazilian Latin Groove |
| BLIMP | The Bill Loomis International Music Project |
| BLMA | Brookline Library Music Association (Brookline, MA) |
| BLSB | Brockville Lions Steel Band |
| BLSF | Band Limited Spatial Filter |
| BLTM | Buckinghamshire Learning Trust Music |
| BM | Band Mikrofon |
| BM | Basic Musician |
| BM | Better Music |
| BM | Big Music |
| BM | Black Metal |
| BM | Blind Melon |
| BM | Blue Mento |
| BMAZ | Beste Musiker Aller Zeiten |
| BMB | Blugold Marching Band |
| BMBC | Bandung Marching Band Championship |
| BME | Bass Music Enterprises |
| BME | Black And Minority Ethnic |
| BMEP | Bristol Music Education Partnership |
| BMF | Blowin' Money Fast |