Related Clues:

• Return of sound waves
• Nasal quality — strumming noise
• Returning sound
• Return of sound
• Sound heard before
• It comes back to you
• Reverberated sound
• Repeat what you heard
• Sound heard in an empty hallway
• You've heard it before
• Bouncer in an empty bar?
• NATO alphabet "E"
• hello ...hello... HELLO? Sounds of a nymph
• Just ringing for a Chinese after tea
• Jazz horn effect