Related Clues:

• Vibrato
• Shaky effect in music
• Musically shivering
• A vibrating effect in music
• Sound yet unsteady
• At last a flowing warble
• The broken tool is about a thousand in such a shaky way
• That's pretty vibrant, by the sound of it
• Singer's quivery effect
• Songbird's sound
• How to sing a piece written in quavers?
• Unsteady effect, lot more unsteady
• Musical effect that's a lot more complicated
• Rapid bowing, lot more difficult
• Lot more feverish, rapid bowing