The present invention provides dynamically changing musical compositions and sound compositions. Provided is a dynamic music sound file format, as well as an illustrative operating environment in which the invention may be practiced. The sound file includes many different characteristics relating to the components that are easily accessible. Each time the user listens to a song or sound composition, it may change. For example, the user may listen to a song and then play the same song again and hear a different version of the song. A script tool is used to create scripts that are used to play back a song. The scripts are user definable and may, for example, define a specific order to play the components, define the components that may be played next to each other during the playback. The possibilities for new music experience are expanded, adding tremendous value for the listener and tremendous creative opportunities for the artists.
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