Fantasia Concertante. Concerto in B-flat for Piano and Orchestra No. 5, H 366 was written on the impetus of the successful Swiss businessman Karl Weber, who wanted to fulfil his wife’s dream of having her own “tailor-made” composition by Martinů. The Martinůs first met the pianist Margrit Weber on 6 July at a concert in Rome, at which she enchanted the composer with her playing. He finished the composition on 3 January 1958. Fantasia Concertante was the only concerto by Bohuslav Martinů to be published in his lifetime. The publication of Martinů’s final concerto by Universal Edition was prepared and intensely discussed with the composer even before its premiere, which was held in Berlin on 4 January 1959 and performed by the dedicatee, Margrit Weber, and the Berlin Philharmonic conducted by Gotthold Ephraim Lessing.
Ivana Kalina Tabak, „Bohuslav Martinů Complete Edition: Piano Concertos Nos. 4 and 5,“ Martinů Revue, vol. XXI, no. 2, 2021, p. 2–3 [completed by Zuzana Votavová, 2026].
Ivana Kalina Tabak, The Bohuslav Martinů Complete Edition: Piano Concertos Nos. 4 and 5, series III/1/5, Prague: Bärenreiter, 2019.