Related Clues:

• Display of vibrato
• Sound of poor quality that comes from bird
• Operatic vocal effect
• Warbler's output
• Sing like a canary
• Sing in Western ball forgoing money
• Showy note
• Fluttering musical ornamentation
• Quavering or vibratory sound
• Nestling's noise, sometimes
• Sing like a sparrow
• Composer's embellishment
• Sing till Queen enters
• Swallow sound
• Note from a bird