*Octave and septimal chromatic semitone on C = D♭ (Ben Johnston's notation). Just: 21:10 = 1284.47 cents. Limit: 7-limit. Created by Hyacinth (talk) using Sibelius 5 with midi pitch bend on 4,91 for 1284.472656 cents rather than 1200.
Passamezzo moderno/"Gregory Walker" chord progression in C major, beginning with tonic chord in second inversion and continuing using minimal-change and "closest-packing" rules (minimizing each voice's change from previous note and keeping each chord's notes as close to each other as possible; resulting order of inversions is second-first-second-root/second-first-second-root-second)
Opening measures of Chopin's "wrong note" etude Op. 25 No. 5, demonstrating a humorous use of the minor second. The original work is public domain, image created by the uploader.