| Abbreviation | Definition |
|---|---|
| GCE | Goddard Cumulus Ensemble |
| GCMB | Gita Caraka marching band |
| GCME | Geneva Colloquium on Music and Emotion |
| GCMN | Global Club Music Network |
| GCMT | Gilroy Children's Musical Theater |
| GCMT | Grand Cities Music Together |
| GCO | Gateway Chamber Orchestra |
| GCSO | Gulf Coast Symphony Orchestra |
| GD | Grateful Dead |
| GD | Green Day |
| GDA | Green Day Authority |
| GDBC | Green Day - Basket Case |
| GDFR | Going Down For Real |
| GDG | Goblet Drumming Group |
| GDM | Goth Dance Music |
| GDP | Greywolf's Dogz Pack |
| GDRB | Green Day Rock Band |
| GDTD | Go Down The Drain |
| GDTRFB | Going Down the Road Feeling Bad |
| GEAR | Guitars, Equipment, And Reviews |