Related Clues:

• A few quick light steps down a hole with a fellow from Ireland
• Heart murmur?
• Sing with lips closed
• Sound of quick, light steps
• Rain-on-roof sound
• Dull tapping sound
• Smooth engine sound
• Low murmur
• Play the guitar, say
• Tense drone across electric resistance with guitar beat
• Play the kazoo
• Play lazily, as a guitar
• Steady drone
• Small splashing
• Beehive sound