Britten's twelve-tone 'Screw' theme [4]divides into equivalent tetrachords, each a segment of the circle of fifths: D-A-E-B, F#-C#-G#-D#, Bb-F-C-G. Created by Hyacinth (talk) 03:10, 7 January 2012 (UTC) using Sibelius 5.
Chromatic tetrachord in pythagorean tuning. MIDI pitch bend appears to match intervals (0,64; 112,65; 64,61; and 80,64). Created by Hyacinth (talk) using Sibelius 5.