Two browser tools for training the ear by feel rather than by counting. No build step, no backend, no account — open the file and it runs.
Intervals arranged by circle of fifths instead of semitone count, each one carrying an emotional shorthand and a body cue. Live harmonic-alignment view, beat-rate readout, and a spaced-repetition drill with a tonic drone.
A screener built to resist the usual false positives — randomised octaves and timbres, a memory-wiping scramble between trials, latency capture, no feedback mid-run — plus landmark training that starts from a single note.