Momente (Moments) is a work by the German composer Karlheinz Stockhausen, written between 1962 and 1969, scored for solo soprano, four mixed choirs, and thirteen instrumentalists (four trumpets, four trombones, three percussionists, and two electric keyboards). A "cantata with radiophonic and theatrical overtones" (Maconie 2005, 240), it is described by the composer as "practically an opera of Mother Earth surrounded by her chicks" (Stockhausen 1989, 147). It was Stockhausen's first piece composed on principles of modular transposability, and his first musical form to be determined from categories of sensation or perception rather than by numerical units of musical terminology, which marks a significant change in the composer's musical approach from the abstract forms of the 1950s (Maconie 1973, 32).
Stockhausen began work on Momente in January 1962, with a performance planned for the following May. He had been invited by Baron Francesco Agnello to withdraw for the period of composition of the work to his palazzo in Siculiana on the south coast of Sicily. Agnello was an ardent supporter of modern music, and directed the Settimane Internazionali di Nuova Musica di Palermo. The plan was that Stockhausen would go to Sicily first, and Mary Bauermeister would follow a week later, to work on paintings for an exhibition planned for Amsterdam in June. Stockhausen's wife Doris would join them in March, leaving their children in someone's care in Cologne. The palazzo was freezing cold, as it was really intended only as a summer residence, and for three months both Stockhausen and Bauermeister "worked like crazy" on their respective projects, retreating to a small, easily heated room, furnished with a piano and two tables (Bauermeister 2011, 79–80).