Theme tune
This tune is played after the title screen has been prepared (see 34351).
In-game tune
This tune is played by the main loop while a game is in progress (see 34874).
Air supply
This sound effect is produced while the air supply in the current cavern is being drained before moving to the next cavern (see 37044).
Escape
This sound effect is produced when Willy escapes from the mine (see 36983).
Lose a life
This sound effect is produced when Willy loses a life (see 35080).
Game over
This sound effect is produced by the routine at 35140 during the game over sequence.
Jumping
These sound effects are produced by the routine at 35515 when Willy is jumping.
Falling
These sound effects are produced when Willy is falling (see 35673).