What school were Hryhoriy Veryovka and the composer of "Carol of the Bells" faculty members at? 
Hryhoriy Veryovka:  Veryovka was also a professor of conducting at the Kyiv Conservatory, where he worked alongside faculty including Boleslav Yavorsky, Oleksandr Koshyts, Mykola Leontovych, and Mykhailo Verykivsky.
i don't know