No loop, no chords — just sing or play a whole melody. The app infers the key from your notes alone, names the mode and the traditions that use it, and shows how you deviate from the scale you established.
Gate 0 = hear everything (incl. hum) · raise it to block quiet drone. Clarity low = accept any sound · high = only clearly-pitched notes. Watch the live readout while silent, then while humming, to find the sweet spot.
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Press record, then sing or play a whole melody — no backing needed. Stop when you're done.