| Abbreviation | Definition |
|---|---|
| ECCA | Ensemble Canonical Correlation Analysis |
| ECCE | East Coast Contemporary Ensemble |
| ECCE | Eugene Contemporary Chamber Ensemble |
| ECCO | East Coast Chamber Orchestra |
| ECGC | Elm City Girls' Choir |
| ECMA | Early Childhood Music Association |
| ECMA | East Coast Music Association |
| ECMA | East Coast Music Assosiation |
| ECMA | East Coast Music Awards |
| ECMB | Earlham Cardinal Music Boosters |
| ECMC | Eastman Computer Music Center |
| ECMF | Euro Chamber Music Festival |
| ECMS | Eastman Community Music School |
| ECMS | Emmanuel College Music Society |
| ECMW | English Country Music Weekend |
| ECPE | Enrichment Center Percussion Ensemble |
| ECPO | Eastern Cape Philharmonic Orchestra |
| ECSO | Eastern Connecticut Symphony Orchestra |
| EDBB | Emscher Delta Blues Band |
| EDBB | Estonian Dream Big Band |