4 impromptus, op. 90, D. 899. No. 1 in C minor (9:45) ; No. 2 in E flat (4:45) ; No. 3 in G flat (5:44) ; No. 4 in A flat (8:06) -- 4 impromptus, op. 142, D 935. No. 1 in F minor (11:12) ; No. 2 in A flat (8:06) ; No. 3 in B flat (12:00) ; No. 4 in F minor (6:41).