Composition has always been central to music. Only since the advent of recorded music has a composition been confined to the same identical playback upon each listen, restricting the possibility of even the smallest ‘per play’ nuance in performance. A BRONZE file is not limited to just one identical start-to-finish audio playback. It offers the scope for a piece to vary from play to play, with very precise control over these variations lying with the original creator. Capabilities Responds musically to inputs: AR input, blockchain input, listener input Contains a new level of data: audio, playback models, metadata, and permissions in their most granular form Integrates with games: generative, ever-changing soundtracks that react uniquely to gameplay Supports emerging AI technology: musical AI systems create dynamic, fluid, output, not static output Allows artists to create music for this new medium and control how the inputs affect the music on playback