A thirteenth chord "collapsed" into one octave results in a dissonant, seemingly secundal[1] tone cluster. Created by Hyacinth (talk) 22:18, 5 July 2009 using Sibelius 5.
Complexe sonore: the octatonic scale may be arranged as four major chords or seventh chords. Created by Hyacinth (talk) 13:49, 13 June 2010 using Sibelius 5.
C major and E minor contrast through their respective notes C and B (in red and orange), each a half step apart or leading tones. The chords share two notes (in blue) however.