Pyotr Borisovich Ryazanov (Russian: Пётр Борисович Рязанов; 21 October 1899 [O.S. 9 October] – 11 October 1942) was a Russian composer, teacher, and musicologist.
Pyotr Borisovich Ryazanov (Russian: Пётр Борисович Рязанов; 21 October 1899 [O.S. 9 October] – 11 October 1942) was a Russian composer, teacher, and musicologist.