See What a Song Is Made Of

It measures tempo and key from the audio

Every track is analysed rather than tagged. A beat tracker finds the beats and downbeats, so the BPM is what the record actually does — not a number typed into a file years ago. Key detection runs on the audio too, and is published alongside its Camelot code, which is the notation DJs use to find records that will mix together without clashing.

It separates a record into six stems

LangBeat splits each song into vocals, drums, bass, guitar, piano and effects. Those stems drive everything else: you can hear a track as an instrumental or as vocals alone, see which layers are present at any point, and watch an arrangement thin out and come back.

It maps beats, bars, sections and chords

A structure model marks the intro, verses, choruses, bridge and outro with real timestamps, and a chord recogniser reads the progression bar by bar. Where the recogniser is unsure, LangBeat says so rather than publishing a confident guess.

Hyper Analysis shows the whole record at once

Turn a track card over and the six stems become flowing currents down the page — the entire song visible at once, with the current bars magnified and lit. A stem that drops out thins to nothing, so a breakdown is something you can see from anywhere in the picture. Every observation the visual makes is also written underneath it in plain text.

Public pages are explorable and shareable

Tracks marked public get a permanent page with their full analysis, and can be browsed by tempo, key or Camelot code. The video editor is a public demo that cuts footage to the beat grid.

Unlisted music stays out of search

Anything not explicitly marked public is excluded from the sitemap, carries noindex, and emits no structured data. A private track stays reachable by its link for the person you sent it to, and nowhere else. That boundary is enforced in the page itself, not by convention.