Krystian Zimerman /
Schubert /
Impromptu No. 4 in A-Flat Major, D. 899
February, 1987 in Rosenhugel
- ( 1 DVD ) DG 00440 073 4449
- ( 1 DVD ) DG Japan UCBG-1048
February, 1990 in Bielefeld - Rudolf-Oetker-Halle
- ( 1 CD ) DG 423 612-2 - 00:08:02
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- ( 1 SHM ) DG Japan UCCG-6272 - 00:08:03