Sergey Martynov (1952) –  an opera and camera singer/bass. >>

Sofia Maslovskaya (1883-1953) – an opera producer, teacher and singer (mezzo-soprano). Author of several opera performances in the Latvian National Opera. >>

Pyotr Melnikov (1867–1940) – from 1922 to 1933 director of the Latvian National Opera and accomplished a number of brilliant productions, mainly of Russian classical operas. >>

Ludmila Moroz (1956)  – a singer (mezzo-soprano) and teacher. >>