| sing(verb, sound, agree, allow, acknowledge) |
| purr(verb, wait, shout, whistle, chant) |
| vocalize(verb, state, express, put, wait) |
| buzz(verb, wait, shout, whistle, purr) |
| warble(noun, verb, sound, wait, shout) |
| trill(noun, verb, wait, shout, tune) |
| carol(noun, verb, wait, shout, tune) |
| intone(verb, state, wait, utter, shout) |
| chirp(verb, sound, wait, shout, whistle) |
| pipe(verb, wait, shout, whistle, chant) |
| chant(noun, verb, sound, wait, shout) |
| yodel(verb, sound, wait, shout, whistle) |
| choir(verb, wait, shout, whistle, chant) |
| descant(verb, wait, shout, whistle, recite) |
| hymn(noun, verb, wait, shout, tune) |
| roar(verb, wait, shout, whistle, chant) |
| troll(verb, wait, shout, whistle, chant) |
| whistle(verb, wait, shout, chant) |
| serenade(noun, verb, wait, shout, whistle) |
| belt out(verb, expression, sound, wait, shout) |