Impromptus op. posth. 142 D 935
1969 - 1970, Wien, Studio Casino Baumgarten
- 11:21Impromptu No. 1 in F minor. Allegro moderato
- 05:47Impromptu No. 2 in A flat major. Allegretto
- 09:46Impromptu No. 3 in B flat major. Thema. Andante – Var. I-V
- 07:10Impromptu No. 4 in F minor. Allegro scherzando
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