Any musician can use the Co5 Dial. From Pianists to guitar players or wind instruments. The Co5 Dial applies to all music.

Tired of looking at a book or poster when referencing the circle of Fifths? The Co5 Dial is a portable tactile solution that can free up some space on your wall and adds a professional looking tool to your music room. 

The Circle of Fifths can be confusing. The Co5 Dial removes all the information that is not relative to the key you are focused on. This makes is much easier to read and understand. 

It's not cheating! The Co5 Dial is the exact same as the Circle of fifths, we have not moved or rearranged anything (unlike competing circle of fifths wheels where they move the information around) You are still learning the circle as it was intended. 

See both major AND minor chord progressions. All other circle of fifths diagrams only show the major chord progressions. The Co5 dial shows you the Nashville numbering system for both. 

What notes are sharp or flat in a key? The Co5 dial is the only tool that tells you exactly what notes are sharp or flat in any key in a plain and simple way. 

Instant key signature window. The window on the Co5 dial shows you how many sharps or flats to look for on your music staff. Quiz yourself or just use it as a reference.

Relative and Parallel keys are easy. Select the "I" chord on Major side of the dial and look to the "i" chord on the minor side... that is your relative minor key. Rotate the dial 90 degrees to find parallel keys.