 Stockhausen's two early Electronic Studies (especially the second) had a powerful influence on the subsequent development of electronic music in the 1950s and 1960s, particularly in the work of the Italian Franco Evangelisti and the Poles Andrzej Dobrowolski and Włodzimierz Kotoński (Skowron 1981, 39). The influence of his Kontra-Punkte, Zeitmasse and Gruppen may be seen in the work of many composers, including Igor Stravinsky's Threni (1957 – 58) and Movements for piano and orchestra (1958 – 59) and other works up to the Variations: Aldous Huxley In Memoriam (1963 – 64), whose rhythms "are likely to have been inspired, at least in part, by certain passages from Stockhausen's Gruppen" (Neidhöfer 2005, 340). Though music of Stockhausen's generation may seem an unlikely influence, Stravinsky said in a 1957 conversation:
