Upload a reference. We decode its DNA — key, chords, groove, mood, era, energy arc — then help you write your own from that blueprint. Every tag is auditable. Nothing is hand-waved.
Tools today either grade your demo (Ujam, LANDR) or generate a whole song (Suno). Neither helps you learn from a song you love and write your own.
A decoder for songs you admire, so their DNA becomes source material — not a mold. You keep the taste. We do the reverse-engineering.
Solid borders mean high confidence. Dashed borders mean "not sure yet." You always know what the engine is sure of.
Click "why" on any tag. Every claim traces back to a measurement.