Related Clues:

• Forget the lyrics, maybe
• Sound of a well-tuned engine
• Crowd noise
• Disturbance
• Headache intensifier
• Go smoothly
• Sound from a fan
• Motor sound
• Use kazoos
• Drone
• Cacoph-ony
• Be at a loss for words?
• Render a tune
• Kipling's 'Gunga ___'
• A lot of noise