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"Trevor, the Triclops Trooper"

Title Trevor, the Triclops Trooper
ComposerF.G.J. Absil
Instrum.Studio Orchestra
DateJuly 2023
StyleStudio Orchestra
Keyatonal (polychords)
Tempo132 - 180 BPM


A musical score excerpt
  • Woodwinds: Piccolo, Flute 1-2-3 (Flute 3 doubling on Alto Flute), Oboe 1-2, English Horn, Clarinet in Bb 1-2-3 (Clarinet 3 doubling on Bass Clarinet), Bassoon 1-2, Contrabassoon;
  • Brass: Horn in F 1-2-3-4, Trumpet 1-2-3, Trombone 1-2-3, Bass Trombone, Tuba;
  • Percussion: Timpani, Bar Chimes, Bass Drum, Bongos, Clash Cymbal, Snare Drum, Suspended Cymbal, Tambourine, Toms, Triangle (8 players);
  • Keyboards: Celesta, Harp, Xylophone;
  • Strings: Violins 1, Violins 2, Violas, Cellos, Double Basses.


YouTube video of the Polychords with Major and Minor Triads: Application Example tutorial The video tutorial on Polychords with Major and Minor Triads uses the composition 'Trevor, the Triclops Trooper' as application example. YouTube link to the video tutorial: Polychords with Major and Minor Triads: Application Example (35:22). Here are some details about the composition and the MIDI mockup production:

  • The piece has ternary form with quasi-sonata character (exposition mm. 1-45, development mm. 46-111, recapitulation mm. 112-130) and is subdivided into 15 sections.
  • The composition uses two building blocks. The first is a a set of major triads SM with symmetrically distributed roots (SMR4i), e.g., B-G-Eb. Alternatively, minor triads Sm are used, e.g., F#m-Dm-Bbm.
  • The other building block is the hexatonic triad pair (HTP), a major triad followed by a minor triad a major third (four semitones) below, e.g., C-G#m. The coupling of two HTP's yields C-G#m-E-Cm.
  • These building blocks are stacked as polychords, i.e., two-layer hexachords S(6p) = S(3p)|S(3p). In the chord continuities the stacking order uses various combinations: HTP|SMR4i, SMR4i|HTP, SMR4i|SmR4i.
  • The continuities may be modified: use single layer S(3p) only, apply bass / top part pedal point, chromatically ascending bass, outer part contrary motion. A main theme melody is derived from the HTP continuity.
  • The audio rendering of the Cubase 12 / Vienna Ensemble Pro 7 Midi mockup uses Aaron Venture Infinite Woodwinds and Brass libraries, Sample Modeling Ensemble Strings. Percussion libraries are the Spitfire Audio BBC Symphony Orchestra and the Toontrack Orchestral Percussion. Effect plug-ins are Steinberg stock, FabFilter, LiquidSonics, Valhalla DSP, and Nugen Audio.

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