Marij Julij Kogoj (Trieste, 20 September 1892[1] – Ljubljana, 25 February 1956) was a Slovenian composer and writer of Italian birth.
[2] He performed his own music as part of the September 1920 Novomeška pomlad [sl] (Novo Mesto Spring), an exhibition sponsored by Fran Windischer [sl] and painter Rihard Jakopič in Novo Mesto that brought together many avant-garde artists such as futurist poet Anton Podbevšek, painter Božidar Jakac, singer Zdenka Zikova [cs], and poet Miran Jarc.
[7][a] In 1922, Podbevšek, Kogoj, and theater critic Josip Vidmar issued a journal named Trije labodje [sl] (Three Swans) after the example of Der Blaue Reiter.
Polona Tratnik [sl] wrote that Pilon captured Kogoj's "eccentricity and enigmatic nature"—perhaps signs of his later mental illness, she speculated.
[14] His plans for a systematic approach to atonal harmony via "chord permutations", which anticipated the compositional procedures of Schoenberg and Josef Matthias Hauer, remained unfinished.