| Answer | Crossword Clue |
|---|---|
| DUO | Half a quartet |
| DUET | Half a quartet |
| DUO | Half a quartet. |
| PAPAS | Half a '60s quartet |
| MAMAS | Half a 1960s quartet |
| MAMAS | Half a '60s quartet |
| PAPAS | Half a 1960s quartet |
| MAMAS | Half a pop quartet |
| MAMAS | Half a '60s pop quartet |
| PAPAS | Half a '60s singing quartet |
| MAMAS | Half of a 1960s quartet |
| PAPAS | Half of a 60's quartet |
| MAMAS | Half of a 60's quartet |
| MAMAS | Half of a '60s quartet |
| PAPAS | Half of a '60s quartet |
| PAPAS | Half of a 60's folk quartet |
| MAMAS | Half of a 1960's pop quartet |
| MAMAS | Half of the "Monday, Monday" quartet |
| PAPAS | Half of the "Monday, Monday" quartet |
