Click on quartet name "Hummm Bugs" below for details
| Quartet | Chapter | Area of operation | Province | Category |
| 4-FUN | Cobequid Fun-Tones | Oxford | Nova Scotia | |
| Bellavoce | Breton Songbirds | Sydney | Nova Scotia | |
| Coastal Harmony | Sea Belles | Saint John | New Brunswick | |
| Cooler On The Coast | ScotianAires | Dartmouth | Nova Scotia | |
| enJOY! | ScotianAires | Dartmouth | Nova Scotia | |
| Four Shore | Seaside A Cappella | Bridgewater | Nova Scotia | |
| Friends First | Sea Belles | Saint John | New Brunswick | |
| Harmonix | Island A Cappella | Charlottetown | Prince Edward Island | |
| Hummm Bugs | ScotianAires | Dartmouth | Nova Scotia | |
| Lady Lyrix | ScotianAires | Dartmouth | Nova Scotia | |
| Lookin' 4 Treble! | Sea Belles | Saint John | New Brunswick | |
| Metro Music Machine - 1991 Harmony Queens | Harmony, Inc. Area 1 | |||
| Moments of Magic | Sea Belles | Saint John | New Brunswick | |
| Nova Quattro | Sea Belles | Saint John | New Brunswick | |
| QWiNN | Valley Voices | Kentville | Nova Scotia | |
| Retake | Island A Cappella | Charlottetown | Prince Edward Island | |
| SeaNotes | Island A Cappella | Charlottetown | Prince Edward Island | |
| Silvern Voices | Newfound Sound, Inc. | St John's | Newfoundland & Labrador | |
| Spectrum - 1993 Harmony Queens | Harmony, Inc. Area 1 | |||
| TAMbre | Island A Cappella | Charlottetown | Prince Edward Island | |
| Tonic! | ScotianAires | Dartmouth | Nova Scotia |
