! notchedcube.scl Otonal tetrads sharing a note with the root tetrad, a notched chord cube 28 ! 49/48 25/24 21/20 15/14 35/32 9/8 8/7 7/6 6/5 49/40 5/4 9/7 21/16 4/3 7/5 10/7 35/24 3/2 49/32 25/16 8/5 5/3 12/7 7/4 25/14 9/5 15/8 2/1