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
How to Have Sex in an Epidemic MSM in New York City and San Francisco had been infected. Retrospective analysis by the CDC found that there were between 250,000-300,000 people living with HIV in the United States in 1983, and the number of people newly infected between `83-`84 was around 150,000). However, the model set forth by Callen and Berkowitz at least provided the possibility of a "return to intimacy" for people with AIDS, which, despite being based on a now-defunct notion of how the syndrome arose, was important in combating the social death that many PWA faced after diagnosis. "How to Have Sex in an Epidemic"