Genus (music) the other hand, also has twelve pitches to the octave, but the semitones are all of the same size. In contrast, the ancient Greek chromatic scale had seven tones to the octave (assuming alternating conjunct and disjunct tetrachords), and had incomposite minor thirds as well as semitones and whole tones. The (Dorian) scale generated from the chromatic genus is composed of two chromatic tetrachords: whereas in modern music theory, a chromatic scale is: The number and nature of the shades of the chromatic genus vary amongst the Greek theorists. The major division is between the Aristoxenians and the Pythagoreans. Aristoxenus
Tropical Storm Octave (1983) to clean up dried mud near some rivers. Many destroyed buildings were later rebuilt. Considerable experience was also gained on how to protect flood banks. Ever since Octave, most of southern Arizona has been a drought. Repair costs from Octave totaled $60 million. It is estimated that it took four months for floodwaters to recede across southeastern Arizona and portions of New Mexico. Tropical Storm Octave (1983) Tropical Storm Octave was considered the worst tropical cyclone in the history of Arizona. The origins of Tropical Storm Octave were from a tropical disturbance that formed south of the Gulf of Tehuantepec