The channels of the midi playing while in a level, as well as which midi is playing, depend on the user's position and whether or not they're underwater.

At Y>4300, the map's secondary theme (the lighthouse ambiance) plays.

At Y<0, if the player is underwater, the Deep Underwater theme plays. (It is unknown if it plays when the player is not swimming - requires testing!)

Near Jinxy plays at between 0>X>-8000, and 10000>Z>3600.

• Spring plays at Z > 1800 and |Z|>|X|
• Summer plays at X < -1800 and |X|>|Z|
• Fall plays at Z < -1800 and |Z|>|X|
• Winter plays at X > 1800 and |X|>|Z|

This variation is used in the MMM Entrance, Coffin Room, Lava Room, and Floor 5.