Sessions are generated by an AI model, not looked up from a verified source. It's built to double-check its own work on things like tempo math, chord tones, and physically playable technique — but it can still occasionally get a specific detail wrong, especially on less common instruments or more obscure theory. Treat anything technical (a scale choice, an interval, a fingering) as worth a moment's sanity check before you build a habit around it, the same way you would with any other single source.

Used for generating, swapping, adjusting, and asking. Opus can go deeper on harder theory but takes longer.

Your profile, goals, skills, custom instructions, and practice log all live only in this specific browser — they won't follow you to a different browser, computer, or copy of this file. Export a backup periodically, and import it to restore everything (or carry it somewhere else).