Every tool free and in your browser, grouped by what you are trying to do — understand the theory, train your ear, write a progression, keep time, or set up an instrument. Work through them in order, or jump to the one you need.
New to this? The Studio courses teach music from the ground up, in order — begin with Sound Foundations. The tools below are the hands-on half of that: practice what a lesson covers, then keep going.
Just need an answer? Jump to the Circle of Fifths, Scale Library, Chord Library or the Ear Trainer.
Working through theory properly? The Music Theory Fundamentals path is the full ladder, and every drill below has a place on it — read the notes on the stave in the Sight-Reading Trainer, name key signatures in the Key Signature Trainer, build the chords yourself on the Keyboard Trainer, hear them in the Chord & Scale Ear Trainer, and finish by writing music down from hearing alone in the Dictation Trainer.
How scales, chords and keys are built. Look something up, hear it, then go and use it.
Click any key on the wheel to see its key signature, relative minor or major, the seven diatonic chords and its closest neighbouring keys.
circle of fifths · key signaturesEvery scale in every key — notes and degrees, the interval pattern, piano and guitar positions, and the diatonic chords and progressions in the key.
scale notes · scale on piano and guitarA reference page for every chord in every key — the notes, a piano diagram, a guitar shape and the full fretboard, and the keys the chord belongs to.
chord notes · how to play a chordEvery interval from unison to octave — the sound, the songs that open with it, the inversion, and where it sits on piano and guitar.
music intervals · perfect fifth · major thirdScales, modes, chord formulas, intervals and key signatures on one printable reference page.
theory reference · scales & modes80 essential production and audio terms explained in plain language — from sidechain to transient to LUFS.
production terms · audio glossaryScored drills. A few minutes a day is how ear and fretboard knowledge actually stick.
Five drills on a playable piano keyboard: name the lit key, find a named note, and build intervals, scales and chords with your own hands. Every key sounds.
piano note names · build chords on the keyboardHear two notes, name the interval, get instant feedback and a running score. Pick which intervals to drill and the direction — ascending, descending or harmonic.
ear training · interval recognitionSee every note on the guitar or bass neck, drill the note names, and name the interval, scale and chord shapes lit on the neck. Standard tuning, 4 to 6 strings.
guitar fretboard · scale shapes on the neckName the note, the interval, the chord or the whole scale written on the stave, with instant feedback and a score. Treble and bass clef, adjustable range.
sight reading · read chords on the staveA rhythm appears, a count-in plays, and you tap it back — spacebar, click or tap. Timing feedback and a score, from quarter notes to syncopation.
rhythm practice · read rhythmHear a chord, a scale or a whole chord progression and name it. Major-versus-minor up to seventh chords, the modes, and the progressions most songs run on.
chord ear training · progression by earThe conservatory exercise: hear a melody and write it back in scale degrees, or hear a rhythm and build it from note values. Replay as often as you like, marked note by note.
melodic dictation · rhythmic dictationRead a key signature off the staff and name the major and minor key, or work the other way and give the number of sharps or flats. Scored, with two difficulty ranges.
key signature practice · how many sharpsThe songwriting workflow: find a progression, see what fits the key, work out what a song is doing, move it to where you need it. Not sure which one? Read the guide →
Pick a key and a mood — pop, sad, jazz, lo-fi, blues, cinematic — and get a progression with Roman numerals. Regenerate for a new one.
chord generator · progression makerChoose a root note and scale type to see all seven diatonic chords, the scale notes, the Camelot position and common progressions — with audio.
scale chords · diatonic chordsThe reverse — enter the notes you have and it names every scale that contains them, exact matches first, each linked to its full page.
what scale is this · name a scale from notesPaste any chord progression to find the key, Roman numerals, compatible scales and mood. Handles sevenths, altered dominants and slash chords.
key finder · what key is thisClick or type the notes and it names the chord — 7ths, sus, add, altered dominants, slash chords and inversions.
chord identifier · name a chordPlay a chord into your microphone and it names it live — root, quality and the notes it heard. Nothing is recorded or uploaded.
what chord is this · chord finder by earMove a progression by semitones or from one key to another. Keeps sevenths, sus chords and slash bass notes. Includes a capo chart.
transpose chords · capoTurn a chord progression into Nashville numbers in any key, or numbers back into chords. One chart, every key.
nashville numbers · number systemEnter a tone row and get all forty-eight forms in one table — prime, retrograde, inversion and retrograde inversion, each labelled. Rows from Schoenberg, Berg and Webern included.
twelve-tone matrix · serialism row tableThe progressions behind popular music, in Roman numerals, with the songs that use each — I–V–vi–IV, the 50s progression, ii–V–I, the 12-bar blues and more. Hear any of them.
chord progressions · songs that use themWell-known songs and the progression each one is built on — search a song, or filter by progression, genre or decade. Chords shown in the song's key, playable.
song chords · what chords does this song useSteady time is the one thing every style needs. Practise to a click, find a track's tempo, understand its meter, then sketch a beat.
An accurate Web Audio metronome. Tempo 30–300 BPM, time signatures with an accented downbeat, tap tempo, keyboard control. Works offline.
metronome · tap tempoTap in time with any track to read its tempo in beats per minute. A rolling average keeps the reading stable as you tap.
bpm counter · tap tempoPick any time signature to see how it is counted, where the strong beats fall, whether it is simple, compound or complex — and hear it played.
time signature · odd meterProgram drums, a bass line and a melody on a step grid. Every pitched note is locked to your key and scale. Tempo, swing, and the link is your save file.
online sequencer · beat makerGet in tune, learn the keyboard, find an alternate tuning, line up two tracks in the same key — or check your mix is ready before you share it.
A playable keyboard — mouse, touch or your computer keys. Turn on note names, highlight a scale or chord, and hear every key.
virtual piano · online keyboardA microphone tuner with a cents readout. Chromatic plus guitar, bass, ukulele and violin presets. Nothing is recorded.
online tuner · guitar tunerStandard, Drop D, DADGAD, Open G, Open D and more — the notes of each string, what the tuning is used for, and how to get there from standard.
drop d tuning · dadgad · open gAn interactive wheel of all 24 keys. Click any segment to see the harmonically compatible keys for smooth, in-key DJ transitions.
harmonic mixing · key wheelCheck your mix before you post it — LUFS loudness against Spotify, Instagram and TikTok targets, mono/phase compatibility for phone speakers, and a phone-speaker playback preview. 100% private, nothing is uploaded.
LUFS checker · mono compatibility checkerStudio is the course — music from the ground up in a set order, 360 lessons across 15 paths. These tools are the practice: a lesson explains intervals, then you drill them in the Ear Trainer; a lesson covers keys, then you explore them on the Circle of Fifths. Every lesson ends with a link to the drill that practises exactly what it just explained.
The Scale Library and Chord Library are the reference — look a shape up when you hit it, the way you would a dictionary. The gear database shows what real artists play once you are ready to buy.
No sign-up, no paywall, no ads. Everything runs in your browser.