Graco Pack'n'Play Owner's Manual page 26

PLAYFUL ENVIRONMENT— Select for playful
song with synchronized vibration.
WAVES ENVIRONMENT— Select for waves sound
with synchronized vibration.
TWINKLE TWINKLE ENVIRONMENT— Select
for additional lullaby sound with synchronized
vibration.
RAINDROPS ENVIRONMENT— Select for rain
sound with synchronized vibration.
BELLS ENVIRONMENT— Select for bells sound
with synchronized vibration.
WIND ENVIRONMENT— Select for wind
environment with synchronized vibration.