Related Clues:

• Vibrating effect
• Diva's device
• Vocal effect
• Organ effect
• Voice lesson topic
• Organ device
• Relative of vibrato
• Vocal vibrato
• Singing effect
• Fast vibrato, in music
• Repeated tone
• Wavy tonal quality overdone by a lot of "American Idol" hopefuls
• Quavering note
• __ arm (electric guitar add-on)
• Cheap trill?