MusicReason turns music theory into a browser-side conversation

Field notes

The homepage describes a family of 120 musical engines, organized around decisions such as naming a chord, estimating tempo, or checking pitch rather than presented as a generic calculator directory. Its stated result format moves from an immediate answer or playable object to evidence, plain-language interpretation, optional transformation, and practice. Microphone input and loaded audio are said to remain in the browser, with processing handled by the device’s audio engine rather than a cloud project.