The chisar (χισάρ) element has its basis and theoretical position on chouseini [A]. Like choumagioun, it is a reentrant element, meaning its basis lies at the center of the element, rather than at its lower degree. Chisar takes its name from its use of the nim chisar position [G#]. In staff notation, a theoretical intervallic structure of 13·5·5·12 commas is defined, classifying chisar as a hard chromatic element.
The adaptation of chisar to equal temperament is referred to as the equal-tempered chisar element (or chisar*) and occurs as illustrated in the following figure.
This excerpt is from my book The Theory of Rebetiko, where I delve into the modal system of Greek music as it relates to the rebetiko genre. To access the complete text—including detailed discussions, tables, illustrations, and musical transcriptions of the examples—visit this page and explore the rich world of Greek modal music.
