Partitur
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Partitur for macOS, Windows and Linux · Free

See inside any song.

Drop in a recording. Partitur maps its beats, bars, chords, key, sections and loudness onto one score you can play and loop, engraves it as sheet music, and gets it ready to practise and to play live. On your own computer, with your files staying where they are.

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Free and open source (GPL-3.0). No account needed to analyse a song.

Partitur's song overview for Night Transit: tempo 116 BPM, A minor, 4/4, loudness −13.3 LUFS; the form, waveform and chords across the song with the playhead in the chorus; the chord F, bar 37, the section Chorus; and the song clock on the right.Partitur's song overview for Night Transit: tempo 116 BPM, A minor, 4/4, loudness −13.3 LUFS; the form, waveform and chords across the song with the playhead in the chorus; the chord F, bar 37, the section Chorus; and the song clock on the right.
attacca straight on, without a pause Here is one song, Night Transit, from its first listen to the stage. Press play.

One song, one score.

This is Night Transit, the demo song Partitur writes for itself. Every note of it is known, so what follows the music below is exactly what was written. Press play, or click anywhere on the strip.

Tempo116BPM
KeyA minor8A
Meter4/4
Length2:15
Chord
AmiTonic

Next F in 4 beats

Beat

Bar 1 of 64

Section Intro

Verse at 0:08

0:00.0BAR 1 · BEAT 1

Slowing down keeps the pitch: here your browser does it; in Partitur the practice player does, from 40 to 125 %, and it can transpose too. The chords are shaded by their job in the key: tonic light, predominant mid, dominant dark, as in the app.

poco a poco crescendo little by little, louder Little by little, more of the song opens up: the whole studio behind the overview.

Every reading, one click away.

Behind the overview is the whole studio: a timeline you can zoom, how sure each reading is, the song engraved as sheet music, practice tools, a comparison against a reference, DJ cues and liner notes written from the measurements.

The Timeline tab: sections, waveform, beats, chords, key, spectrogram, pitch classes and loudness on one zoomable timeline.The Timeline tab: sections, waveform, beats, chords, key, spectrogram, pitch classes and loudness on one zoomable timeline.
Timeline. Sections, waveform, beats, chords, key, spectrum and loudness, lane under lane, following playback.
The Readings tab: how sure Partitur is of the key, meter, pulse, tempo and whether the chords fit the key, as rings from 83 to 100 percent.The Readings tab: how sure Partitur is of the key, meter, pulse, tempo and whether the chords fit the key, as rings from 83 to 100 percent.
Readings. Every value says how sure it is, and what would make it ambiguous.
The Score tab: Night Transit engraved as a lead sheet with chord symbols over slash notation and section marks, with buttons to save PDF, MusicXML, MIDI and ChordPro.The Score tab: Night Transit engraved as a lead sheet with chord symbols over slash notation and section marks, with buttons to save PDF, MusicXML, MIDI and ChordPro.
Score. Engraved as a lead sheet and a songbook, the pages turning with playback. Save it as PDF, MusicXML, MIDI or ChordPro.
The DJ tab: phrases counted in bars, hot cues and loops at the section starts, and the Camelot wheel with 8A, A minor, highlighted.The DJ tab: phrases counted in bars, hot cues and loops at the section starts, and the Camelot wheel with 8A, A minor, highlighted.
DJ. Phrases in bars, cues and loops at every section, harmonic mixing on the Camelot wheel, exports that rekordbox and Serato read.
The Notes tab: liner notes in serif type describing Night Transit's form, harmony, key change, tempo and loudness, with time stamps you can click.The Notes tab: liner notes in serif type describing Night Transit's form, harmony, key change, tempo and loudness, with time stamps you can click.
Notes. Liner notes written from the measurements; every time stamp jumps there.
rit. slowing down Now slow down. This is where you learn it, one hard bar at a time.

Practise the hard bar, not the whole song.

Loop any part, slow it down without changing its pitch, move it into your key, count yourself in. Partitur keeps a log of what you practised and brings sections back when they are due.

  1. 01

    Loop the hard part

    Any section or any range, as many passes as it takes, with a bar of clicks to count you in first, or before every pass.

    Pass 1Night Transit, bars 9 to 20

  2. 02

    Slow it down, keep the pitch

    From 40 to 125 % speed with the pitch where it was. The speed trainer starts slow and goes up 5 % every two passes until you are at tempo.

    Speed70%
    Tempo81BPM
    PitchA = 440 Hzunchanged at every speed
    1. 70
    2. 75
    3. 80
    4. 85
    5. 90
    6. 95
    7. 100
  3. 03

    Move it into your key

    Up or down by as much as six semitones. Every chord view follows, spelled for the key you end up in.

    Pre-chorus · bars 13–16 · A minorTranspose0semitones
    1. Dmiv
    2. FVI
    3. GVII
    4. EV

    A minor B minor, up 2: Em G A F♯

    Night Transit does this itself: its last chorus comes back two semitones up, in B minor, at bar 53.

  4. 04

    Guitar shapes, and where to put the capo

    The easiest shape for each chord in standard tuning, and the capo position that makes the whole song easiest to play. For Night Transit that is fret 5.

    Chorus · standard tuningCapo 5the easiest for this song
    C×x 3 2 0 1 0
    sounds F
    D××x x 0 2 3 2
    sounds G
    Em0 2 2 0 0 0
    sounds Am
    G3 2 0 0 0 3
    sounds C
  5. 05

    A log that brings it back

    Time spent looping or slowed down counts as practice by itself. A spaced-repetition schedule brings each section back when it is due, on Home.

    Pre-chorus · practice logDue today, on Home

    Reviewed after 2 minutes or 4 passes. A hard one comes back tomorrow; one that goes fine comes back 1, 3, 8, then 20 days later.

  6. 06

    Play along

    Play into the microphone with the song: every chord change you hit, and how close to the beat you are, section by section. Nothing is recorded.

    Play along · chorus
    1. F
    2. G
    3. Am
    4. C
    EarlyLate

    What it listens for: most of the sound on the chord's tones, and your notes' onsets against the beat.

The Practice tab: practice mode, speed at 100 percent with steps from 50 to 125, transpose, count-in, and guitar chord diagrams for Em, C, G and D with the suggestion capo 5.The Practice tab: practice mode, speed at 100 percent with steps from 50 to 125, transpose, count-in, and guitar chord diagrams for Em, C, G and D with the suggestion capo 5.
The Practice tab. Speed, transpose, count-in and the shapes, for the section you are in.
The overview's lower half: the form with bars and times, the harmony loop Am, Em, F, C with roman numerals, the key change to B minor at 1:47, transpose and capo with the hint that fret 5 gives the most open shapes, and Play along.The overview's lower half: the form with bars and times, the harmony loop Am, Em, F, C with roman numerals, the key change to B minor at 1:47, transpose and capo with the hint that fret 5 gives the most open shapes, and Play along.
On the overview. The form, the harmony, the key change, transpose and capo, and Play along.
accel. ff faster, then very loud Up to tempo, and louder: it's time to play it for people.

Ready for the stage.

Stage mode puts the song on the whole screen, readable across a room: the chord now and next, a beat countdown, the lane of chords to come, the section. Page-turner pedals step through the set.

Stage mode: Night Transit on a graphite screen, the chord Am in very large type with its numeral i, next F in 2 beats, a lane of coloured chord blocks with a vermilion now-line, the section Bridge, then Chorus, and bar 46.3.
A setlist, Friday at the Anchor: six songs with key, tempo and length, a pause of 3 seconds between songs, Play from the top and Gig sheet.A setlist, Friday at the Anchor: six songs with key, tempo and length, a pause of 3 seconds between songs, Play from the top and Gig sheet.
Setlists. A running order with a pause between songs; next and previous go by song, from the keyboard, the media keys or a pedal.
The printable gig sheet: each song with its chords, form letters, key, tempo, meter and length, and the key move into the next song marked, with a smoother suggestion.The printable gig sheet: each song with its chords, form letters, key, tempo, meter and length, and the key move into the next song marked, with a smoother suggestion.
Gig sheet. One page for the stand: key, tempo, form and chords per song, and how each key change into the next song will feel.
A HUD over anything

Small plates over a game, a DAW or a video call: the chord, the bar and beat, the section. Every click goes through.

Ableton Link

The song's tempo and bars for Live, Bitwig and every Link app on the network, tempo changes included.

MIDI clock

24 pulses a beat along the song's own grid, with start, stop and song position, for drum machines and sequencers.

Pedals and controllers

A MIDI foot pedal or pad can play, loop, slow down and step through a set. Press Learn, then the pedal.

The stream overlay, following the song

A page for OBS

Add Partitur's overlay as a browser source: the chord now and next, the section, the bar and beat, on a transparent ground or one to key out. It is served on your computer only, at an address with a secret in it.

segue it follows on, without a pause Song after song, night after night: every one is kept.

Every song, kept like a record.

Every song you open lands in your library with its analysis, so it reopens at once. Each one gets its song clock: the sections around the rim, the chords on the circle of fifths, its cover as the label.

IntroVersePre-chorusChorusVersePre-chorusChorusBridgeChorus +2OutroCGDAEBF♯C♯A♭E♭B♭FA minor116 BPM · 4/4

Night Transit, as a song clock

Rim
Its ten sections, clockwise from the top, the choruses darkest; a tick every four bars.
Petals
The chords' roots on the circle of fifths, longer the more of the song they take.
Shade
The chord's job in the key: tonic light, predominant mid, dominant dark.
Hub
Its key and tempo; with a cover, the record's label.

Give it a spin: drag the record, or just scroll. Click a petal to hear its chord.

The library as a grid of song clocks, each with its album cover at the centre: Night Transit, Northbound, Glasshouse, Copper Sky, Late Platform and Salt and Signal, with key, Camelot number, tempo and length.The library as a grid of song clocks, each with its album cover at the centre: Night Transit, Northbound, Glasshouse, Copper Sky, Late Platform and Salt and Signal, with key, Camelot number, tempo and length.

Has someone analysed it already?

Songs people have shared with Partitur and named. Open the same recording in Partitur and its analysis is there at once, without being analysed again.

    The command palette over the song overview, searching for stage: Stage mode, big chords, the whole screen, readable across a room, shortcut F.The command palette over the song overview, searching for stage: Stage mode, big chords, the whole screen, readable across a room, shortcut F.
    1. 01
      Collections that fill themselves

      Songs that mix with the one you're on (neighbouring Camelot keys, a tempo within 6 %), songs due for practice, your own rules.

    2. 02
      Watched folders

      New audio in a folder you choose joins the library and is analysed in the background, only while nothing plays.

    3. 03
      Open with, drag out

      Open songs from your file manager; drag a song's MIDI, MusicXML, ChordPro or audio straight into a DAW or a notation program.

    4. 04
      Keyboard first

      Ctrl K (⌘ K on a Mac) finds any song, any command, a bar or a time. It works on this page too.

    sotto voce in an undertone, quietly Quietly now: where your music goes, and where it never does.

    Your audio stays with you.

    The signal analysis (beats, chords, key, form, loudness) always runs on your computer. The heavier work, stems, notes, lyrics and the model readings, runs where you choose.

    Where Partitur's work happens Your computer keeps the audio and runs the signal analysis. To ask whether a song is known, only its fingerprint goes to Partitur. Stems, notes and lyrics run on this computer or on your own rig (Partitur's GPUs are paused for now); for a run elsewhere the audio goes for that run only and is deleted when it ends. This computer The audio, and the signal analysis beats · chords · form · key · loudness Stays hereYour files, their analysis, your library.Nothing is uploaded to open a song. PartiturIs this song known? Asked by fingerprint Partitur's GPUsPaused for now · later for credits Your own rigA computer of yours with a graphics card a1:···· audio, sealed audio, sealed deleted when the run ends Where Partitur's work happens Your computer keeps the audio and runs the signal analysis. To ask whether a song is known, only its fingerprint goes to Partitur. Stems, notes and lyrics run on this computer or on your own rig (Partitur's GPUs are paused for now); for a run elsewhere the audio goes for that run only and is deleted when it ends. This computer The audio, and the signal analysis beats · chords · form · key · loudness Stays hereYour files, their analysis, your library.Nothing is uploaded to open a song. PartiturIs this song known? Asked by fingerprint Partitur's GPUsPaused for now · later for credits Your own rigA computer of yours with a graphics card a1:···· audio, sealed audio, sealed deleted when the run ends
    01On this computer

    Partitur sets up the models this machine can run, with one button, and runs them one stage at a time so the computer stays usable.

    02On Partitur's GPUs, later

    Paused for now, while we make sure every model we would run there may be offered that way. When they return: with an account, for credits, with a free monthly allowance.

    03On your own rig

    A computer of yours with a graphics card, paired with your account. Your runs go there, at no cost.

    The This computer view: the system, processor and memory, and which stages can run here on the processor and which need a graphics card elsewhere.The This computer view: the system, processor and memory, and which stages can run here on the processor and which need a graphics card elsewhere.
    This computer. What this machine can run, and what it would take elsewhere.
    • No tracking.

      The app has no analytics and no ads, and it sends a crash report only when you have read it and said so. The website has none either: no cookies, no analytics. It asks GitHub which release is the newest, and Partitur's server only when you search for a song.

    • Songs are asked about by a fingerprint.

      A song you open is looked up by a hash of its encoded audio, never the audio, so no song is analysed twice. You can turn it off.

    • Your files stay where they are.

      The library keeps the analysis in the app's data folder; your audio files aren't copied or moved.

    • Sign-ins stay out of the page.

      The app keeps your sign-in in the system's keychain. An account is only for GPU runs and keeping libraries in step.

    To Coda jump to the ending Take it home.

    Take it home.

    Free, for macOS, Windows and Linux. Pick the file for your computer; the steps to install it are right beside it.

    The first release is being engraved.

    Installers for macOS, Windows and Linux appear here, and on the releases page, the moment they are published. This page reads them from there directly: nothing to sign up for.

    What is Partitur?

    A free desktop app for musicians on macOS, Windows and Linux. Open a recording and Partitur finds its beats, bars, tempo, chords, key, sections and loudness, puts them on one score you can play and loop, engraves it as sheet music, and gets it ready to practise and to play live. The analysis runs on your own computer.

    How is it different from Chordify, Moises, Capo or Transcribe!?

    Chordify analyses songs online and shares them through its catalogue; Moises is best known for separating a song into stems; Capo is a Mac and iOS app for learning songs by ear; Transcribe! is a long-standing workbench where you mark beats and sections by hand. Partitur analyses the recordings you have, on your computer, and keeps a song's chords, form, sheet music, practice and stage together. The comparison puts all five side by side, from each one's own pages, with when another tool is the better choice.

    Is it really free?

    Yes. Partitur is free and open source (GPL-3.0), and everything it does on your computer is free. Runs on your own rig cost nothing either. Partitur's own graphics cards, once they are back, will use credits, with a free monthly allowance.

    Which files does it open?

    MP3, WAV, FLAC, M4A, OGG, Opus and AIFF, up to twelve minutes, and its own .partitur.zip bundles. Drop a file anywhere in the window, or open it from your file manager.

    Does it need the internet?

    No. The analysis runs on your computer. The internet is used to look a song up by its fingerprint (you can turn that off), for GPU runs if you want them, and for updates.

    Why does my system warn me the first time?

    Because these first builds aren't signed yet: macOS and Windows warn about any app from a developer they don't know. The steps beside each download get you past it once. Each file's SHA-256 checksum is listed, so you can check it is the one published.

    What does my computer need?

    macOS 11 or later, Windows 10 or 11, or a 64-bit Linux. The signal analysis runs on any of them. For the heavier work on the computer itself, Partitur shows what your machine can run: stems and the song's structure need an NVIDIA graphics card with 6 to 8 GB or a 12-core processor with 16 GB of memory; notes and sheets need a card with 8 GB, the listening notes one with 12 GB. Or send them to Partitur's GPUs or your own rig.

    Is there a version for my phone?

    Not yet. Partitur is for macOS, Windows and Linux. You can open this page on your computer to download it, or send yourself the link.