Question: Sigmund Romber is best known for his 1924 operetta that featured lyrics by whom?
Sentence (from "Vera Zorina (singer)"): Vera Vasilyevna Zorina (Russian: Вера Васильевна Зорина ; real surname - Popova; 1853 - 1903) was a Russian operetta singer (mezzo-soprano), best known as a Russian romances (or 'Gypsy art-songs') performer.
Relevant evidence: No