Related Clues:
- Sonic boomerangs
- Bounces back
- Identical responses
- They repeat whatever you say
- Hollow replies
- 'Straight Outta Compton' group
- Reflections of sound
- Returning sounds
- Natural sound repetitions
- Natural sound reflections
- Reverberations of sound
- Reflections of sound waves
- Resounds, reverberates
- Repetition of sounds
- Sound reverberations