ChordSonicbeta

Free audio tools — chords, separation, music theory.

A growing toolkit for musicians and producers. Detect chords and tempo from any audio, split a song into stems, turn a part into MIDI, and explore music theory — all in the browser, free, no signup.

Core tools

One tool per job — chords, stems, MIDI, tempo and theory.

  • Analysis

    Chord Finder

    Drop any MP3 or WAV and get the full chord progression, key and tempo straight from the audio. Export to TXT, CSV or JSON.

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  • Generation

    Track Generator

    Describe a track — genre, instruments, mood — and get finished audio back, in the key and tempo you asked for. Then fix a section or make it longer without starting over.

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  • Separation

    Stem Splitter

    Split a song into separate stems — vocals, drums, bass, guitar, piano and more. Download each one, plus the chords, key and tempo for the same track.

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  • Separation

    Vocal Remover

    Strip vocals from a song and download a clean instrumental backing track — ready for karaoke, practice or remix work.

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  • Separation

    Vocal Extractor

    Pull the vocal stem out of a finished mix for sampling, study or an a cappella edit.

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  • Separation

    Acapella Extractor

    Take the acapella out of a finished record for a remix, a mashup or an edit — with the key and tempo it has to sit against.

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  • Separation

    Voice Isolator

    Lift a voice away from the music behind it, for spoken word, interviews and voiceover as well as singing.

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  • Separation

    Song Splitter

    Split a whole song into separate tracks you can mute, solo and play along with — four parts for everyone, six on a paid plan.

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  • Analysis

    Audio to MIDI

    Turn a melody, bass line or solo into editable MIDI notes on a piano-roll, then download the MIDI file for your DAW.

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  • Analysis

    BPM Finder

    Detect the tempo of any track. Upload audio for an automatic BPM read, or tap along to find the beat by ear.

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  • Analysis

    Key and BPM Finder

    Find the musical key and the tempo of a song from the audio — major or minor, plus BPM — with the chord progression the answer was read from.

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  • Analysis

    Tap Tempo

    Tap along with a track and read the BPM off your own taps, in the browser. No upload, no account — or hand the file over and have the tempo measured from the recording instead.

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  • Theory

    BPM to ms

    Turn a tempo into delay and reverb times — every note value in milliseconds and hertz, ready to paste into a plug-in.

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  • Theory

    Music Scales

    Every major and minor scale written out, plus modes, pentatonics and blues — notes, degrees and the pattern of steps.

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  • Theory

    Camelot Wheel

    Interactive harmonic-mixing wheel in Camelot notation. Translate any key into its code, and see which codes mix with it.

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  • Theory

    Chord Player

    Pick a chord and hear it, with fingerings for guitar, piano and ukulele. String chords into a sequence, loop it back at any tempo and export the result to MIDI.

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  • Theory

    Circle of Fifths

    Interactive chord wheel. Click any key to highlight its diatonic chords, hear them instantly and explore major/minor relationships.

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  • Theory

    Chord Progression Generator

    Build a progression from the chords in any key, loop it back at any tempo, follow next-chord suggestions, load classic presets and export to MIDI.

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  • Chords

    Guitar Chord Finder

    Pull the chord progression, key and tempo out of any guitar recording — open or barre, capo, drop D and alternate tunings all welcome.

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  • Chords

    Piano Chord Finder

    Look up any piano chord — major, minor, 7ths, extensions — and see the voicing on a keyboard with the notes spelled out.

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  • Chords

    Ukulele Chord Finder

    Find ukulele chord shapes by name. Standard GCEA tuning, fingering diagrams and common variations side by side.

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More separation presets

Shortcuts, not separate products. Each one runs the same separation as the Stem Splitter, just pre-set for one job so you skip picking stems yourself.

Guides & comparisons

Longer reads — what a tool is for, and how ChordSonic stacks up against the ones you may already be using.

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