The Acorn Singers were a male voice quartet with five voices. Yes, I know that sounds a bit odd – but we started as just four voices, then we added a fifth to give a wider range of possible repertoire.
The music was mostly glees – but with other things too – and we even had music written specifically for us.
If you want to see some of what we sang, then you can look in musidkk2 (when that is published)