<P> Short cyclical progressions may be derived by selecting a sequence of chords from the series completing a circle from the tonic through all seven diatonic chords: </P> <Ul> <Li> I - IV - vii - iii - vi - ii - V - I (in C major) Circle progression in C major (help info) </Li> <Li> I - V - I Circle progression excerpt: I - V - I (help info) </Li> <Li> I - IV - V - I Circle progression excerpt: I - IV - V - I (help info) </Li> </Ul> <Li> I - IV - vii - iii - vi - ii - V - I (in C major) Circle progression in C major (help info) </Li> <Li> I - V - I Circle progression excerpt: I - V - I (help info) </Li>

The standard harmonic progressions for blues songs are also called