Music Theory
20 tools
Tools — 20 tools
Keyboard ear trainer
Hear a note, then click the matching key on the on-screen piano — with instant feedback, the right key revealed on a miss, and a running score.
Virtual piano
Play a piano in your browser — use your mouse, touch, or computer keyboard. Real piano sound, and a free Pro tab with up to 61 keys, sustain, MIDI keyboard input, a metronome, and recording.
Note ear trainer
Hear a note, name it, and get instant feedback and a running score — with a reference C to anchor your ear, right in your browser.
Note finder
Pick a note and see every place it sits on the piano keyboard, named — and tap any key to hear it.
Key signature finder
Pick a mode and a key and see its sharps or flats drawn on the staff, the scale spelled out, and its relative key named — then hear it played.
Note reading trainer
Practice reading the treble, alto or bass staff: a note appears, you click it on the piano. Instant feedback, the note plays, your score tracks.
Chord progression player
Browse the progressions behind pop, rock, jazz, blues and classical music, hear each one in any key on piano or guitar, and loop it at your own tempo to practice or write over.
Chord finder
Pick a root note and a chord type — major, minor, sevenths, suspended and more — and see the chord on the piano, named and spelled out for you.
Scale finder
Pick a root note and a scale type — major, minor, the modes, pentatonic, blues — and see every note light up on the piano, spelled out for you.
Key signature trainer
A key signature appears on the staff, you pick the major key it belongs to, and you get instant feedback and a running score.
Tap tempo (BPM tapper)
Tap the button or the space bar in time with any music and it reads the tempo back in BPM, with a matching tempo marking.
Interval reading trainer
Two notes appear on the staff, you name the interval between them, and you can hear it — with instant feedback and a running score.
Interval ear trainer
Train your ear to recognise intervals: hear two notes, name the interval. Instant feedback and a running score.
Chord analysis tool
Pick a major or minor key and see its seven diatonic triads with numerals, chord symbols, and notes — click a numeral to light the chord on the keyboard and hear it.
Chord ear trainer
Train your ear to recognise chords: hear a chord, name its type — major, minor, diminished and more. Instant feedback and a score.
Accidental calculator
Pick a key and a note letter and it tells you the sharp, flat, or natural that letter carries in that key, spells the note, and shows it on the staff.
Chord reading trainer
A chord is stacked on the staff, you name its type, and you can hear it — with instant feedback and a running score.
Scale ear trainer
Hear a scale played from a random root and name its type — major, minor, the modes, pentatonic, blues — with instant feedback and a running score.
Scale reading trainer
A scale is written on the staff, you name its type, and you can hear it played back — with instant feedback and a running score.
Interval finder
Pick a root note and an interval — from a minor second to an octave — and see and hear the two notes on the piano.
Read about Music Theory — 91 articles
All 91 articles →Piano chord progressions: the chart, the voicings and the songs
The piano chord progressions behind most songs, a chart of the chords in all 12 major and minor keys, and how to voice each one with two hands: left-hand roots, right-hand inversions and smooth voice leading.
Music theory basics: the ten ideas behind every song, in order
Music theory for beginners in ten steps, from note names and the staff to scales, keys, intervals, chords and progressions: the short answer for each, a free tool to practice it, the full lesson and a rough time.
Guitar Chord Progressions: the Patterns Behind Most Songs
Chord progressions are numbers, not names — learn I–V–vi–IV once and you can play it in any key. The seven chords of the five guitar keys, the eight progressions worth memorizing, the songs that use them, and how to move any of them with a capo.
Scale Construction Table
A quick-reference table of every scale in this book — its tones and step structure at a glance.
Other Exotic and Ethnic Scales
Enigmatic, Hungarian minor, Persian, Arabian, Japanese and more — exotic and ethnic scales with fretboard patterns.
Diminished
The symmetrical eight-note diminished scale (whole-half and half-whole) in positional and diagonal fretboard forms.
All 91 articles → · 85 more