| A Cappella Showcase | Waterdown |
| Acton Citizens Band | Acton |
| Burlington Civic Chorale, Choir Group | Burlington |
| Burlington Concert Band | Burlington |
| Burlington Junior Redcoats | Burlington |
| Burlington Symphony Orchestra | Burlington |
| Burlington Teen Tour Band | Burlington |
| Burlington Welsh Ladies Chorus | Burlington |
| Burlington Welsh Male Chorus | Burlington |
| Canadian Croatian Choral Society | Oakville |
| Circle of Harmony Chorus | Oakville |
| Georgetown Bach Chorale | Georgetown |
| Georgetown Pipe Band | Georgetown |
| Golden Horseshoe Chorus | Burlington |
| Halton Hills Concert Band | Georgetown |
| Halton Regional Police Service, Halton Regional Police Chorus | Oakville |
| Halton Regional Police Service, Pipes and Drums | Oakville |
| Hamilton Children's Choir, Hamilton Children's Choir Classes and Performances | Hamilton |
| High Rendition Jazz Band | Oakville |
| Intrada Brass | Oakville |
| Kerr Street Concert Band | Oakville |
| Masterworks of Oakville Chorus & Orchestra | Oakville |
| Milton Choristers | Milton |
| Milton Concert Band | Milton |
| Milton Philharmonic Orchestra | Milton |
| North Halton Community Singers | Georgetown |
| Oakville Chamber Orchestra | Oakville |
| Oakville Choir for Children & Youth | Oakville |
| Oakville Choral | Oakville |
| Oakville Symphony | Oakville |
| Oakville Symphony Youth Orchestra | Oakville |
| Oakville Wind Orchestra | Oakville |
| Oakville. Recreation and Culture, Sir John Colborne Recreation Centre for Seniors, Interlink Choir | Oakville |
| Oakville. Recreation and Culture, Trafalgar Park Older Adults Centre, Kerr Street Singers | Oakville |
| Southern Ontario Lyric Opera | Halton Region |
| Suite Melody Care | Oakville |
| Tempus Choral Society | Oakville |
| Top Hat Marching Orchestra | Burlington |
