Composer

See all the chords in a key, see how to play them and build chord progressions.

Composer is a concise music theory reference tool that has 14 of the common major and minor musical keys geared for composers, songwriters and producers. In addition to the 7 chords in a key, Composer allows you to see how to play those chords and build them into a chord progression for your music. Build up your music theory knowledge with this powerful and easy to use interface.