Daniel Barenboim /
Chopin /
Nocturne No. 21 in C Minor, Op. posthumous, B. 108
January 30 - 31 & May 4 - 7, 1981 in Berlin - Siemens Villa - Studio Lankwitz
- (17 CD) DG 463 047-2
- ( 2 CD ) DG 463 057-2