Importance

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Abstract

A musical performance is generated by a segment object and a plurality of constituent track objects. Multiple segment instances can be played concurrently by instantiating multiple state objects corresponding to the segment instances. Each state object stores state information for the track objects of the segment object. When calling a track object to play a portion of its track, the state object provides the stored state information and the track object plays in accordance with the provided state information. The track object updates the state information and returns it to the segment object. Each state object calls the same track objects, but maintains a different set of state information for use by the track objects. This allows multiple concurrent instances of the tracks, without requiring actual duplication of the track objects.

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First Claim