The Green-Diamond Engraving
The Green-diamond Engraving is a devotional form of music directed toward the worship of Ecbethudu the Regulation of Manufacturing originating in The Grand Confederations. The form guides musicians during improvised performances. One to five chanters recite nonsensical words and sounds. The entire performance is to be moderately loud. The melody has short phrases throughout the form. Only one pitch is ever played at a time. It is performed using the ibalarek scale and in free rhythm. Throughout, when possible, performers are to make trills, play rapid runs, modulate frequently and play arpeggios.
- Each chanter always does the main melody and should perform sweetly.
- The Green-diamond Engraving has a well-defined multi-passage structure: a brief verse and a chorus, a lengthy bridge-passage and a verse and a chorus.
- The first verse is very fast. Each of the chanters' voices ranges from the middle register to the high register.
- The first chorus slows and broadens. Each of the chanters' voices ranges from the middle register to the high register.
- The bridge-passage is very fast. Each of the chanters' voices ranges from the low register to the middle register.
- The second verse is slow. Each of the chanters' voices ranges from the low register to the middle register.
- The second chorus is twice the tempo of the last passage. Each of the chanters' voices stays in the middle register.
- Scales are conceived of as two chords built using a division of the perfect fourth interval into eight notes. The tonic note is a fixed tone passed from teacher to student.
- As always, the ibalarek heptatonic scale is thought of as two disjoint chords drawn from the fundamental division of the perfect fourth. These chords are named equanamsespe and iquur.
- The equanamsespe tetrachord is the 1st, the 3rd, the 6th and the 8th degrees of the fundamental perfect fourth division.
- The iquur tetrachord is the 1st, the 4th, the 7th and the 8th degrees of the fundamental perfect fourth division.
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