File:Thirteenth chord collapsed.midDescriptionThirteenth chord collapsed.mid English: A thirteenth chord "collapsed" into one octave results in a dissonant, seemingly secundal tone cluster
File:Thirteenth chord collapsed.png([[User talk:Hyacinth|talk]]) using Sibelius 5. See: [[:Image:Thirteenth_chord_collapsed.mid]]. {{GFDL-self|migration=relicense}} [[Category:Music images]]