| Brotherly quartet's sounds are real crushers |
| Instruments in string quartets |
| Alphabet quartet |
| Quartets |
| Quarters of some quartets |
| Quarters of many quartets |
| Guys in barbershop quartets |
| Parts of string quartets |
| Apocalypse quartet |
| Alphabetical quartet |
| Good student's report card quartet |
| Part of some vocal quartets |
| Eliot's "___ Quartets |
| One of a Mississippi quartet |
| Barbershop quartet member |
| Girl of barbershop quartets |
| Swedish pop quartet that won the 1974 Eurovision contest |
| ''Dancing Queen'' quartet |
| Like many barbershop quartets |
| Alexandria Quartet" author |
| Swedish pop quartet |
| '70s quartet consisting of two married couples |
| Barbershop quartet part |
| Barbershop quartet sweetie |
| Jazz legend who turned the Benny Goodman Trio into the Benny Goodman Quartet |
| Koufax quartet |
| Swedish quartet whose hits included "Dancing Queen" and "Fernando |
| What the Emerson Quartet plays |
| Trios and quartets, e.g. |
| No-nonsense quartet? |