Adaptive music / All0Sound notes

Start with musical behavior, not a playlist.

A practical starting point for planning music that responds to a game or interactive experience.

Define what the listener should feel

Choose a small number of musical states: calm exploration, growing tension, full engagement, or release. Describe the emotional purpose of each before choosing the technology. Two clearly different states can tell you more than a large collection of unrelated tracks.

Map meaningful events

List the events that should change the music. A change of location, a player decision or a shift in intensity may matter. Avoid reacting to every input. Decide which transitions need an immediate response and which can wait for a musical boundary.

Choose what can vary

Try changes in instrumentation, density, register, rhythm or harmony. Start with one or two parameters, listen to the result, then add complexity. Keep a clear musical reason for each change.

Test the transitions

Listen to repeated changes, interrupted events and long periods in the same state. Check whether the music can return naturally to a quieter condition. Test with the rest of the soundscape, not only in isolation.

Make a small prototype

Build one short interaction with a limited palette. Record what feels responsive and what feels distracting. This prototype becomes a shared reference for the composer, developer and audio designer.