John Ogdon plays Schumann Symphonic Etudes, op. 13 - live 1963

John Ogdon playing Schumann's Symphonic Etudes, op. 13, live in Leningrad on 29 November 1963. I believe this piece is new to Ogdon's discography. As with the Chopin recording from this recital, I've increased the volume and removed as many clicks and pops as possible, but have not reduced the hiss.