recognition in the form of the State Prize and Foreign Orders, he received a number of stimuli from foreign avant-garde, which he had organically incorporated into his compositional morphology. He also excelled in pedagogical activities and interest in non-European cultures. He was one of the first promoters of electro-acoustic music in Czechoslovakia. Numerous choreographers have also taken up his work "Eight Inventions for Percussion Instruments. ", Alvin Ailey with the American Dance Theater are the most prominent among them, his choreography titled Streams, was performed in Prague too in 1979. Symphonies Symphony No. 1 in D for strings and percussion, Op. 11 (1941–42) Symphony No. 2 in C for large orchestra, Op. 15 (1942–46) Symphony No. 3 in F for organ, brass and timpani, Op. 33 (1948–57) Symphony No. 4 in A, "Chamber Symphony", Op. 36 (1954–58) Symphony No. 5 in B flat minor, "Dramatic", for soprano without text, and orchestra, Op. 41 (1960) Symphony No. 6 "Concertante", for clarinet and orchestra, Op. 44 (1961–62) Symphony No. 7 for orchestra and reciter on the composer's text after the Bible, Op. 52 (1967–68) Symphony No. 8 "Antiphonies", for soprano, mixed choir, percussion and organ, on words from the Bible, Op. 54 (1970) Further orchestral works Overture No. 2 for large orchestra, Op. 17 (1947) Childish Moods. Little orchestral suite, Op. 22 (1955) Suite from the music to Sophocles' Electra for alto, female choir and orchestra, Op. 28a (1956) Mystery of Time. Passacaglia for large orchestra, Op. 31 (1953–57) Three Melodramas to accompany the play Kuo Mo-jo "Master of Nine Songs" for reciter and chamber orchestra, Op. 34b (1957) Hamlet Improvisation for large orchestra, Op. 46 (1962–63) Reflections. Nine miniatures for orchestra, Op. 49 (1963–64) Metamorphoses II, for piano and orchestra, Op. 58 (1979) Piano compositions Passacaglia TGM, Op. 3 (1937) 7 compositions for piano, Op. 14 (1944–47) Easy Preludes, Op. 26 (1955) 8 preludes for piano, Op. 30 (1955–56) Cizokrajné motivy – Motifs from Foreign Countries, Op. 38 (1959) Small Suite for piano 4 hands, Op. 42 (1960) Organ compositions Fantasies for organ in G minor and D minor, Op. 32 (1957–58) 4 preludes for organ, Op. 48 (1963) Other chamber compositions Wind Sextet, Op. 8 (1940) Sonatina for oboe and piano, Op. 24 (1955) Ballad for violin and piano, Op. 27 (1956) Suite for saxophone and piano, Op. 39 (1959) 8 Invenzioni for percussion instruments, Op. 45 (1962–63) Otto ricercari,