František Kupka (1871-1957), Impromptu, signed ‘Kupka’ (lower right), watercolour on paper, 10 3/4 x 11 5/8 in. (27.4 x 29.5 cm.), Executed circa 1913-1914, Image Source: Christie’s
Wolfgang Amadeus Mozart – Piano Concerto No. 25 in C major, K. 503 The musicians: philharmonie zuidnederland with Duncan Ward, conductor and Hannes Minnaar, piano