Circle of fifths and fourths for musicians description

FifthCircle is an interactive circle of fifths and fourths that lets you explore musical harmony simply by playing chords. FifthCircle is very useful in many ways for beginners and experienced musicians.
Its main features are :
- turn the wheel to set the key
- choose major or minor harmonisation, the chord degrees will appear accordingly
- select the chord notes and intervals you want to hear (tonic, third, fifth and / or seventh)
- play chords by simply pressing on the wheel
- create and record new chord progressions (it's possible with 7th and 7thb5 chords too)
- copy and share your progressions
- mute and unmute sound