Music theory you can see.
Free, interactive tools for guitar and piano players. Pick a tool below — no sign-up, works on your phone.
Scale Finder
Made a riff? Tap its notes on the fretboard or keyboard and instantly see every scale and key that fits — plus the notes you can add.
Find scales for your riff →More tools
Licks & Exercises
Technique exercises and style licks with tab — loop them with the metronome and let the speed trainer push the tempo.
Start practising →Guitar Fretboard
See any scale across the whole neck, frets 0–19, in seven tunings — standard, Drop D, DADGAD, Open G and more.
Open the fretboard →Piano Scales
Every scale in every key on a piano keyboard — with the step pattern and the relative key.
Open piano scales →Circle of Fifths
Key signatures, relative minors, neighbouring keys and the six chords that belong together in a key.
Open the circle →Metronome
Practise scales in time. 30–240 BPM, tap tempo and an accented first beat — also built into the guitar and piano tools.
Open the metronome →Same marking everywhere: filled = root, ring = other notes in the scale.