CLASSES = [
    "Accelerating_and_revving_and_vroom", 
    "Accordion", 
    "Acoustic_guitar", 
    "Applause", 
    "Bark", 
    "Bass_drum", 
    "Bass_guitar", 
    "Bathtub_(filling_or_washing)", 
    "Bicycle_bell", 
    "Burping_and_eructation", 
    "Bus", 
    "Buzz", 
    "Car_passing_by", 
    "Cheering", 
    "Chewing_and_mastication", 
    "Child_speech_and_kid_speaking", 
    "Chink_and_clink", 
    "Chirp_and_tweet", 
    "Church_bell", 
    "Clapping", 
    "Computer_keyboard", 
    "Crackle", 
    "Cricket", 
    "Crowd", 
    "Cupboard_open_or_close", 
    "Cutlery_and_silverware", 
    "Dishes_and_pots_and_pans", 
    "Drawer_open_or_close", 
    "Drip", 
    "Electric_guitar", 
    "Fart", 
    "Female_singing", 
    "Female_speech_and_woman_speaking", 
    "Fill_(with_liquid)", 
    "Finger_snapping", 
    "Frying_(food)", 
    "Gasp", 
    "Glockenspiel", 
    "Gong", 
    "Gurgling", 
    "Harmonica", 
    "Hi-hat", 
    "Hiss", 
    "Keys_jangling", 
    "Knock", 
    "Male_singing", 
    "Male_speech_and_man_speaking", 
    "Marimba_and_xylophone", 
    "Mechanical_fan", 
    "Meow", 
    "Microwave_oven", 
    "Motorcycle", 
    "Printer", 
    "Purr", 
    "Race_car_and_auto_racing", 
    "Raindrop", 
    "Run", 
    "Scissors", 
    "Screaming", 
    "Shatter", 
    "Sigh", 
    "Sink_(filling_or_washing)", 
    "Skateboard", 
    "Slam", 
    "Sneeze", 
    "Squeak", 
    "Stream", 
    "Strum", 
    "Tap", 
    "Tick-tock", 
    "Toilet_flush", 
    "Traffic_noise_and_roadway_noise", 
    "Trickle_and_dribble", 
    "Walk_and_footsteps", 
    "Water_tap_and_faucet", 
    "Waves_and_surf", 
    "Whispering", 
    "Writing", 
    "Yell", 
    "Zipper_(clothing)", 
]