Theory & ear training for guitar and piano
Hear it.
Read it.
Play it.
Interactive tools for notes, intervals, scales, chords, rhythm and harmony. Every sound is synthesized in your browser and every exercise is generated fresh. No account, no downloads.
Press the shapes to play. Notes appear on the staff. Start at a low volume, especially with headphones.
Free · not part of any paid tool
Mini interval quiz
Five rounds. Two notes play one after the other. Is the gap a 3rd, a 5th or an octave? It is a quick taste of ear training, separate from the paid tools.
Requires sound. Start at a low volume, especially with headphones.
Tier one
Foundations
Five focused tools for the essentials of musicianship. Each one is sold on its own, or get all five with one key.
Foundations
Note Reader
Name notes on the staff, the fretboard and the keyboard until reading them is automatic.
$10
Foundations
Interval Ear Trainer
Hear the distance between two notes and name it — ascending, descending or together.
$14
Foundations
Scale & Mode Explorer
Every major, minor, pentatonic, blues and modal scale in every key — seen, heard and built from memory.
$16
Foundations
Chord Builder
Build triads and seventh chords in every inversion, then learn to hear their quality and bass note.
$19
Foundations
Rhythm Lab
Read and tap rhythms against a metronome, with timing feedback on every single tap.
$22
Foundations
Foundations Bundle
All five Foundations tools, unlocked by a single key.
$49
Tier two
Studio Editions
Advanced tools with harder material, written exercises checked against rules, and multi-voice dictation.
Studio Edition
Atelier Edition
The most demanding training in the catalogue: compound intervals, seventh-chord inversions, applied dominants, modulations, two-voice and rhythmic dictation.
$75
Studio Edition
Progression Lab
Roman numeral analysis, common progressions in every key, progression ear training and four-part writing checked against the rules.
$35
Studio Edition
Jazz Harmony Studio
Extended and altered chords, ii–V–I in all twelve keys, voicings on keyboard and guitar, and ear training for extensions.
$45
Studio Edition
Melodic Dictation Studio
Hear a short melody, write it on the staff, and get feedback on every note.
$55
How buying and unlocking work
Buy a tool
Pay once through secure checkout. Prices are in US dollars, and taxes are shown before you pay.
Get your key
Your license key appears instantly on the order confirmation page. Copy it and keep it safe.
Unlock and practise
Enter the key on the unlock page. Your tools open in your practice room on any device, with no account.
Questions
How do license keys work?
When you buy a tool, the order confirmation page shows your license key straight away. It looks like FRET-ET-7KQ4M-X9D2P-H6TR. Enter it on the unlock page and the tool opens in your practice room. The key is checked in your browser — there is no account, password or sign-in.
Can I use it on more than one device?
Yes. Enter the same key on each of your devices — your computer, tablet and phone. Each device remembers the key after you enter it once. Keys are for your own personal use, so please don’t share them.
Are the sounds recordings of real instruments?
No. Every sound — the plucked guitar tone, the keyboard tone and the metronome click — is synthesized in your browser as you play. They are designed to sound pleasant and clear, but they are not recordings of real instruments.
Does it work offline?
Yes. Once you have unlocked your tools and opened the practice room while online, it is stored on your device and keeps working without an internet connection. You can also install it to your home screen or desktop like an app, using your browser’s “Install” or “Add to Home Screen” option.