Related Clues:
- How to play the kazoo
- White noise, perhaps
- Repetition of odd upsetting medical abnormality?
- Drink repeatedly passed around, say, quietly
- Sing with closed mouth
- Engine room noise
- "Rattle and __": U2 album
- Copier sound
- Carry a tune without words
- Had smash "Stars"
- "Downward Is Heavenward" band
- Almost sing
- Good noise from an engine
- Subdued complaint
- Half-cut people murmur