Virtual piano
Play with touch, a mouse or your computer keyboard. Chords, octave shift and sustain.
Free music tools
Virtual instruments to play, worksheets to print, and theory tools to explore scales, chords and keys. Each one works in the browser, makes a sound when you ask it to, and spells every note the way a musician would write it. No account, nothing to install.
Want the explanation first? Learn explains the concepts, and Reference has a page for every scale, key, chord and interval.
Instruments to play
The melodica and the recorder are played by blowing into your phone’s microphone — or with a Blow button.
Virtual drum kit
Nine recorded drums and cymbals for touch, mouse or keyboard, with beginner beats to learn step by step.
Virtual xylophone
Strike the bars with touch, a mouse or your keyboard. One or two octaves, note names, and melodies to learn.
Virtual melodica
Blow into your microphone and press keys: a two-octave melodica your breath controls, with songs to try and share.
Virtual recorder
Cover the holes and blow into your microphone: a soprano recorder with real fingerings, beginner songs and a chart.
Fretboard explorer & trainer
Notes, scales, chords and intervals on guitar or bass — then practise finding and naming notes until you know them.
Worksheets to print
A new worksheet every time, with an answer key — or practise the same questions on screen.
Note reading worksheets
Printable treble and bass clef worksheets at three levels, with answer keys — or practise the same notes online.
Key signature worksheets
Name the key or write the signature, major and minor, treble and bass — with answer keys, or practise online.
Explore and identify
Scale explorer
Any major, minor or pentatonic scale on any note, on the staff and on piano, guitar or bass.
Mode explorer
The seven modes on any tonic, with the note that makes each one distinct.
Interval explorer
Every interval inside an octave, from any note, counted and playable.
Chord explorer
Triads, sevenths, sus and add chords on any root, spelled and playable.
Chord identifier
Tap the notes you have. Get every reasonable chord name, the inversion, and why each fits.
Chord progression explorer
Common progressions in any key, with Roman numerals and what each chord does. Hear them.
Chord transposer
Paste chords, pick a key. Correctly spelled results, the Roman numerals, and capo positions.
Key finder
Type chords or tap notes. The likely key, the evidence for it, and when the answer is unclear.
Roman numeral analyzer
Type chords. Get the Roman numerals, each chord's function, how the chords connect, and why it works.
Circle of fifths
Choose a key to see its signature, relative minor and neighbours.
Note finder
Touch a staff note to find its key, or a key to find its note. Both clefs.
Rhythm decoder
Count a written rhythm beat by beat, hear it, then tap it back and see where you were early, late or missed.
Time signature player
Hear 2/4, 3/4, 4/4, 6/8 and 9/8 and where their strong beats land.
Analyse your own music
The explorers above play patterns Tomus already knows. The analyzer works the other way round: give it your own chords and it tells you the key and what each chord is doing. The analysis itself is free; a longer written explanation of your progression is an optional one-off purchase.
Just want to hear I–V–vi–IV or ii–V–I in another key? That is the free chord progression explorer.
Chord progression analyzer
Paste chords to get the key, Roman numerals and cadences. Optional written report.