The Instrumental Bayberry

The Instrumental Bayberry is a form of music used during marches and military engagements originating in The Child of Billon. The rules of the form are applied by composers to produce individual pieces of music which can be performed. The music is played on a dije. The entire performance is to become softer and softer. The melody has short phrases throughout the form. The music is broadly layered with chords spanning the range.

• The dije always does the main melody and should evoke tears.
• The Instrumental Bayberry has a simple structure: three unrelated passages.
• Each of the simple passages is moderately fast. Each passage is performed using the piaki scale and in the qada rhythm.
• Scales are conceived of as two chords built using a division of the perfect fourth interval into eight notes. The tonic note is fixed only at the time of performance. After a scale is constructed, notes are named according to degree. The names are qahpa (spoken qa), oqua (oq), ej (ej), at (at), iadok (iad), poqin (po) and oti (ot).
• As always, the piaki pentatonic scale is thought of as two disjoint chords drawn from the fundamental division of the perfect fourth. These chords are named if and uok.
• The if trichord is the 1st, the 2nd and the 8th degrees of the fundamental perfect fourth division.
• The uok trichord is the 1st, the 5th and the 8th degrees of the fundamental perfect fourth division.
• The qada rhythm is a single line with four beats divided into two bars in a 2-2 pattern. The beat is stressed as follows:
• | x x'| x x |
• where ' marks a beat as late, x is a beat and | indicates a bar.

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