| Foursome |
| ABBA, e.g. |
| Kiss, e.g. |
| String group? |
| Alabama, e.g. |
| Chamber music |
| Group of four |
| Chamber group |
| Musical foursome |
| Many a pop group |
| The Beatles, e.g. |
| Budapest, for one |
| Rigoletto" feature |
| The Beatles or KISS |
| Group such as the Beatles |
| They sing Adeline's praises |
| Pop music's 98 Degrees, e.g. |
| Barbershop singers, typically |
| Four musicians playing together |