Telemusik is an electronic composition by Karlheinz Stockhausen, and is number 20 in his catalog of works. Through his composition student, Makoto Shinohara, Stockhausen was invited by the Japan Broadcasting Corporation NHK to visit Tokyo, and to carry out two commissions in their electronic music studio, in connection with the 50th anniversary of the founding of NHK in 1965. Because of other commitments, Stockhausen was unable to meet this schedule but finally, under pressure from Tokyo, he flew to Japan on 19 January 1966. According to a note in the score, Telemusik was realized between January 23 and March 2, 1966 in the Studio for Electronic Music of the Japanese broadcasting system Nippon Hoso Kyokai (NHK), in collaboration with the director of the studio, Wataru Uenami and the studio technicians Hiroshi Shiotani, Shigeru Satô and Akira Honma. The score is dedicated to the Japanese People. The first public performance took place at the NHK studios in Tokyo on 25 April 1966, in a program which also featured the first and second performances (in versions for trombone and for flute) of Stockhausen’s other NHK commission, Solo.