The Compositional Sorghum-Grain

The Compositional Sorghum-grain is a form of music used during marches and military engagements originating in The Wavy Giant-Grouper. The form guides musicians during improvised performances. Two singers recite any composition of The Pensive Logic. The melody has phrases of varied length throughout the form. Only one pitch is ever played at a time. It is performed using the everinopefa scale and in free rhythm. Throughout, when possible, performers are to glide from note to note and alternate tension and repose.

• Each singer always does the main melody and should feel mournful.
• The Compositional Sorghum-grain has a well-defined multi-passage structure: a verse and a chorus and a lengthy finale.
• The verse is consistently slowing, and it is to be soft. Each of the singers' voices covers its entire range.
• The chorus accelerates as it proceeds, and it is to start loud then be immediately soft. Each of the singers' voices ranges from the low register to the middle register.
• The finale accelerates as it proceeds, and it is to be soft. Each of the singers' voices ranges from the low register to 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. After a scale is constructed, notes are named according to degree. The names are viceva (spoken vi), moro (mo), ebalo (eb), wonethu (wo), bolo (bo), ocaquica (oc) and slothepanine (slo).
• As always, the everinopefa hexatonic scale is thought of as two disjoint chords drawn from the fundamental division of the perfect fourth. These chords are named oyifolewe and izeli.
• The oyifolewe tetrachord is the 1st, the 4th, the 7th and the 8th degrees of the fundamental perfect fourth division.
• The izeli trichord is the 1st, the 5th and the 8th degrees of the fundamental perfect fourth division.

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