Portal 2 makes heavy use of the "fading layers in dynamically" as the music will change when you fly through the air, hold various objects, or change parts of a

Portal 2 makes heavy use of the "fading layers in dynamically" as the music will change when you fly through the air, hold various objects, or change parts of a puzzle. Lots of good examples here https://youtu.be/ursIj59J6RU https://youtu.be/ursIj59J6RU