IMUSE

iMUSE (stands for Interactive MUsic Streaming Engine) is a game engine specifically designed to synchronize music with visual action in a video game. The point of iMUSE is to make the music fit to the scenes, characters and moods of the game. It is patented under US Patent No. 5,315,057 by LucasArts. It was added to the SCUMM engine in 1991.

The first game to use the iMUSE system was Monkey Island 2: LeChuck's Revenge and it has been used in all LucasArts adventure games since. It has also been used for some non adventure Star Wars related LucasArts titles such as Star Wars: X-Wing, Star Wars: TIE Fighter and X-Wing Alliance.