Nocturne no. 7 in C-sharp minor, op. 27 no. 1
Also appears on
Great Pianists of the 20th Century, Volume 79: Maurizio Pollini II
Piano Concerto No. 1 / 4 Nocturnes / Ballade No. 1 / Polonaise No. 6 (Philharmonia Orchestra feat. conductor: Paul Kletzki, piano: Maurizio Pollini)
Pollini plays Chopin
Piano Concerto No.1 / 4 Nocturnes / Ballade No.1 / Polonaise No.6