Topic: "Etude of Rhythm and Harmony" (for Solo Piano)
"Etude of Rhythm and Harmony" (for Solo Piano) by Hugues Bedouelle is entirely composed in the unusual octatonic scale (C, Db, D, E, F, Gb, Ab, Bb) or (0, 1, 2, 4, 5, 6, 8, 10) in digital writing, which is invariant by inversion (palindromic) around Eb. The 70 tetrachords that can be formed from this scale were partitioned into two progressions of 38 tetrachords each that are complementary, are related by the inversion and have only the three invariant tetrachords in common. These progressions are presented in their direct, retrograde, inverted and retrograde inverted forms. The music uses four almost maximally even rhythms of three onsets in eight pulses: [3,2,3] used in the Beijing Opera; [3,3,2] or Tresillo, from sub-Saharian Africa; [2,3,3] or Bossa Nova and [2,4,2] or Caterete both used in Brazil. The transitions between the different rhythms are marked by dynamic (nuance) variations. The score was interpreted with the K2 Grand Piano of Pianoteq in Studio Recording BA mode. The recording is available at:
https://soundcloud.com/hugues-bedouelle/36hb22