Song Finder is a free online song finder — a browser workspace that joins song recognition with a suite of audio tools. You arrive with a file, a recording or a link, and you leave with the answer.

These repositories are the same capabilities, wired into the places developers already work.

npm i -g songfinder

npx -y songfinder-mcp

/plugin marketplace add
  songfinder-dev/songfinder-skills

$ npx songfinder analyze "strobe deadmau5"

I Remember (Strobelight Edit) — deadmau5
Strobelite Seduction (2013)

Tempo:          128 BPM
Key:            B Minor (Camelot 10A, Open Key 3m)
Mixes with:     10B, 9A, 11A
Energy:         59%
Danceability:   66%

Recognition from a page URL — YouTube, TikTok, Instagram, SoundCloud, Bilibili, X — or from an audio file. A chain of engines runs in order until one matches, so a track that defeats the first still has three more chances.

Acoustic analysis keyed by ISRC: tempo, musical key with its Camelot wheel position and harmonically compatible keys, plus energy, danceability, valence, acousticness, instrumentalness, liveness, speechiness and loudness.

Neighbour search, optionally restricted to keys that mix cleanly with the seed — which is what you want when the output is a DJ set rather than a list.

No API key. No account. Rate-limited per IP, because recognition spends real third-party quota.

Tempo can be half or double what a single provider reports. Every analysis response carries a second provider's reading. When the two disagree by more than 3 BPM, one of them counted the groove at half speed — an 87/174 pair is the same track. Every client here surfaces that instead of stating one figure as fact.

The credited artist is whichever catalogue entry matched. Widely re-uploaded tracks match white-label records, so a famous song sometimes comes back credited to a label nobody has heard of. The title is still correct, and the clients say so rather than presenting the wrong artist confidently.

Coverage is genuinely uneven for long-tail releases — many have a tempo but no key, or no analysis at all. Missing fields come back empty rather than invented.

Song Finder — free online song finder — recognition by file, microphone or link, plus a BPM & key finder, a similar-songs finder, a lyrics finder, an audio trimmer, an equalizer, noise reduction, speed and pitch shifting, a chord detector and more. Fourteen languages. Browser extensions for Chrome, Edge and Firefox, plus a userscript.

Most of those tools never send your file anywhere — thirteen of the sixteen run entirely in the browser and make no server call at all. Recognition is the deliberate exception, because matching against a catalogue requires one.