Related Clues:
- Sound happy, maybe
- Bee sound
- Fake the vocals in Rock Band, say
- Annoying speaker problem
- What you can do if you don't know the words
- Droning sound
- Pluck idly
- Low, droning sound
- Sing with one's mouth shut
- Amp problem
- "Dinger" or "drum" starter
- U2 album "Rattle and ___"
- Rhythmic humming sound
- U2 album 'Rattle and ___'
- Work smoothly