Yane Sandanski
Yane Ivanov Sandanski or Jane Ivanov Sandanski (, ) (18 May 1872 – 22 April 1915), was a Bulgarian revolutionary recognised as a national hero in Bulgaria and the Republic of Macedonia.
Ivan Wyschnegradsky
Ivan Alexandrovich Wyschnegradsky (September 29, 1979), also transliterated as Vïshnegradsky, Wyshnegradsky, Wischnegradsky, Vishnegradsky, or Wishnegradsky () (since he emigrated to France, he used "Wyschnegradsky" as spelling for his surname) was a Russian composer primarily known for his microtonal compositions, including the quarter tone scale (24-tet: 50 cents). He also used scales of up to 72 divisions (mainly third (18-tet: 66. cents), sixth (36-tet: 33. cents), and twelfth tones (72-tet: 16. cents)).