Explore music theory
Understand how music works - chord and scale libraries, the circle of fifths, progressions, the chords in every key and a glossary of terms.
- Chord Library
120+ chords
Open - Scale Library
260+ scales
Open - Scale Finder
Visualize scales on piano keyboard and guitar fretboard.
Open - Progressions
Pop, jazz, blues & more
Open - Circle of Fifths
Visualize musical keys and relationships with the eMusic Tools circle of fifths.
Open - Interval Songs
A song you already know for every interval, up and down.
Open - Musical Terms
160+ Italian musical terms with meanings, tempo BPM ranges and a marking decoder.
Open - Chords in Every Key
Every diatonic chord in every key, with Roman numeral analysis.
Open