Make music theory fun and easy!

Decoder: Circle of Fifths

An interactive spin on the classic circle of fifths. Decoder helps make music theory easier by offering an easy-to-digest, graphical representation of the structures in the music. It quickly organises keys, chords, notes, and scales according to what they have in common.

We even added in a little extra - the Quick Chords, a selection of 12 common chord progressions on the back. This way, you can see how chords are built up from the notes. Helping you get playing and applying your new circle of fifths knowledge.

Most circle of fifths are confusing and cluttered

Simplify the theory so you can focus on PLAYING! Music theory has stumped musicians over the years. Decoder let's you play as your learn without information overload.

Decoder: Circle of Fifths