String Quartet of Tchaikovsky Symphony Orchestra:

Sergei Kostylev, violin
Anton Yakushev, violin
Dmitry Usov, viola
Pyotr Kondrashin, cello

Tchaikovsky String Quartet No.1 in D major, 1871

Shostakovich String Quartet No.1 in C Major, 1938

Shostakovich String Quartet No. 8 in C minor ("To the victims of fascism and war"), 1960