Related Clues:

• Cabaret singer ends poorly in quaver
• Swelling vocal sound
• Sound of a young bird
• Hatchling's call
• Bird's warbling sound
• Vocal quaver
• Vocalist's warble
• Heard vulgar call from the hatch
• Violin vibrato sound
• Quavering effect in music
• What sounds like common bird sound
• Pet store sound
• Read out tawdry tweet
• Tweet deserving contempt, did you say?
• Operatic vibrato