| Abbreviation | Definition |
|---|---|
| GIJ | Generations In Jazz |
| GIM | Guided Imagery and Music |
| GIMAT | Girls In Music And Technology |
| GJB | Genuine Junk Band |
| GJB | Gypsy Jug Band |
| GJBB | Garritan Jazz and Big Band |
| GJC | Greenville Jazz Collective |
| GJL | Gloucestershire Jazz Live |
| GKAM | Gail Key Academy of Music |
| GKB | Glenn Kaiser Band |
| GKB | Greg Kihn Band |
| GKJS | Gold Key Jazz Society |
| GLAM | Gay L A Music |
| GLAM | Girls Leadership Academy for Music |
| GLAMA | Great Lakes Acoustic Music Association |
| GLC | Goldie Lookin' Chain |
| GLCO | Great Lakes Chamber Orchestra |
| GLM | Guy Lombardo's Music |
| GLMBA | Grand Ledge Music Booster Association |
| GLMBA | Grand Ledge Music Boosters Association |