| Buzz |
| Purr |
| Drone |
| Bustle |
| Murmur |
| Attila |
| Be busy |
| Run well |
| Bee sound |
| Top sound |
| Drum head? |
| Low sound? |
| Hive sound |
| Run nicely |
| Low murmur |
| Use kazoos |
| Fan noise? |
| Motor sound |
| Go smoothly |
| Drum intro? |
| Motor noise |
| Almost sing |
| Use a kazoo |
| What fans do |
| Engine sound |
| Engine noise |
| Run smoothly |
| Apiary sound |
| Copier sound |
| Fridge sound |
| Play a kazoo |
| Ho's partner |
| Beehive sound |
| Droning sound |
| Drum starter? |
| Emulate a bee |
| Ho's follower |
| Machine sound |
| Theme, Part 2 |
| Work smoothly |
| Sing, in a way |
| Rhythmic sound |
| Lyricless song |
| Sound of a fan |
| Play the kazoo |
| Drone — stink |
| Sing sans words |
| Vibration sound |
| Sing wordlessly |
| Background noise |
| Proceed smoothly |
| Forget the words |
| Had smash "Stars |
| Operate smoothly |
| Persistent sound |
| Be busily active |
| Electronic noise |
| Continuous sound |
| Be busy, as a bee |
| Indistinct murmur |
| Sound before drum |
| Engine room noise |
| Sound of activity |
| Good engine sound |
| Sound happy, maybe |
| Refrigerator sound |
| Refrigerator noise |
| Low, droning sound |
| Sing without words |
| Chug along smoothly |
| How to play a kazoo |
| Smell badly (slang) |
| Vocalize on a kazoo |
| Smooth engine sound |
| White noise, perhaps |
| Wordless vocal music |
| Bustle with activity |
| Low monotonous noise |
| Make music on a comb |
| Sound system problem |
| Sing with closed lips |
| Air conditioner noise |
| Sing with lips closed |
| How to play the kazoo |
| Word with drum or bug |
| Air-conditioning sound |
| Dinger or drum starter |
| Sing with closed mouth |
| Sing with mouth closed |
| Smooth machinery sound |
| Be at a loss for words? |
| Forget the words maybe |
| Annoying speaker problem |
| Forget the lyrics, maybe |
| Sign of smooth operation |
| Sing with a closed mouth |
| Well-tuned engine output |
| Sing without using words |
| U2 album "Rattle and ___ |
| Good noise from an engine |
| Proceed without the words |
| Rattle and ___" (U2 album) |
| Accompany musically, maybe |
| Continue without the words |
| Run smoothly, as a machine |
| Sing with one's mouth shut |
| Symptom for a car mechanic |
| Carry a tune without words |
| Run smoothly, as an engine |
| Machine's low, steady sound |
| Downward Is Heavenward" band |
| Sing with one's mouth closed |
| Sound of a well-tuned engine |
| Fail to know the words, maybe |
| Sound of tires on the highway |
| Participate without the lyrics |
| Substitute for forgotten words |
| Fake the vocals in Rock Band, say |
| What you can do if you don't know the words |
| What to do when you don't know the words to a song |