For this reason every example was transcribed by letter notation, as thetic symbols on one line, and by a dynamic symbol according to the papadic parallage on another line ( each descending step by a plagios formula, and each ascending one by a kyrios formula ).
12.
None of the articles on music notation seem to provide any indication why letter notation starts has " A " where it is; it's a fairly arbitrary choice; there is at least some logic at starting at " do " .-- Robert Merkel 08 : 03, 7 July 2006 ( UTC)
13.
Recently a Midlands State University ( Gweru, Zimbabwe ) lecturer in the department of music and musicology has suggested a letter notation; the upper keys as ( from first left upper key ) E, D, C, F, C, D, and E and the lower or bottom keys as ( from the first lower key ) A, G, F, A, F, C, D, and E . But the Maraire number notation has remained the internationally accepted system ( Chirimumimba, 2007 ).
14.
After chapters on'litterae'( letter notation ), monochord, nine'consonant'intervals ( unison, semitone, whole tone, ditone, semiditone, diatessaron, diapente, semitone-plus-diapente, whole-tone-plus-diapente ), the Perfect System ( systema teleion ) of Greeks, musical modes ( including a chapter on their ethos ), and the composition of chant, the treatise includes one chapter most of interest to contemporary scholars : a detailed description of how to compose organum.
