BPM & Key Finder
Drop a song to get its tempo, key, sections with bar counts, loudness and tone. Everything runs in your browser; the file is never uploaded.
How accurate is it?
Tempo is reliable on songs with a steady beat. It may read half or double the true tempo, so both are shown. Key detection works best on songs that stay in one key; the confidence and the next most likely key are shown so you can judge. Sections are found from changes in loudness, so their names are guesses.
Turn this song into a Suno prompt in the same style, or write lyrics that fit its structure. Free in the studio on your own AI key.
Analyze it in the studio