The Nichavent (Νιχαβέντ) mode has its theoretical basis and final on rast [C], where the fundamental element 5x-nichavent is based, giving the mode its name. This mode is not characterized by any specific incipit, which may occur on rast [C] or neva [G]. The elemental structure is completed with a 4x-kiourdi or 4x-chitzaz on neva [G]. When the top element is the 4x-kiourdi, Nichavent is referred to as “diatonic” (the elemental structure is based exclusively on diatonic elements, namely the 5x-nichavent and the 4x-chitzaz); when the top element is the 4x-chitzaz, Nichavent is referred to as “semi-diatonic” (the elemental structure is based on a diatonic element, the 5x-nichavent, and a chromatic element, the 4x-chitzaz). If the limited range of phrases prevents the form from being determined, it need not be specified. The extension is possible with a 4x-chitzaz on gegkiach [low G], making irak [low B 1 comma flat] the sub-final of the mode.
The primary modal dominant is neva [G], while the secondary is tsargkiach [F]. The following attractions may occur:
kiourdi –> segkiach [Eb –> E 1 comma flat], in phrases gravitating around the dominant tsargkiach [F];
tsargkiach –> nim chitzaz [F –> F#], in phrases gravitating around the dominant neva [G].
Dromos Nichavent
The adjustment to equal temperament is referred to as dromos Nichavent or equal-tempered Nichavent mode (or Nichavent*) and occurs as illustrated in the following figure. All the characteristics of the corresponding microtonal mode are preserved.
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.
