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Sergey Prokof'ev (1891–1953), composer
Region of origin
Ψόφος, a Greek word for sound
City of origin
Year of origin (presumably)
State of origin
Humorous reference to “Quartet X”
Gerhard Rafn (1891–1941), founding 1st violinist
Presumably the sex of the quartet’s members
Ervin Ramor, founding 1st violinist ?
Andrey Razumovskiy (1752–1836), diplomat and arts patron