Национальная музыкальная академия Украины имени П. И. Чайковского
From 1917-1919 Kozlovsky studied composition with Boleslav Leopol′dovich Yavorsky at the Kiev Conservatory. He later studied conducting with Aleksandr Borisovich Khessin and composition with Nikolai Myaskovsky and Nikolai Zhilyayev at the Moscow Conservatory.