 | Oles' Semyenovich Chishko was a Ukrainian and Russian Soviet composer and singer. Oles'... more » |
| Osvald Chlubna was a prominent Czech composer. Intending originally to study engineering,... more » |
 | Otakar Mařák was a tenor Czech opera singer, and a nephew of Julius Mařák who perfected his... more » |
 | Carl Otto Ehrenfried Nicolai was a German composer, conductor, and founder of the Vienna... more » |
| Ottorino Respighi was an Italian composer, musicologist and conductor. He is best known for his... more » |
