Takehisa Kosugi (小杉武久; surname Kosugi; b. Tokyo, Japan, 1938) is a Japanese composer and performer working in the field of contemporary classical music. He is associated with the Fluxus movement, worked with John Cage and David Tudor, and has served as music director for the Merce Cunningham Dance Company. He was also a member of Taj Mahal Travellers. His primary instrument is the violin. Kogusi studied musicology at the Tokyo University of Arts, graduating in 1962. During this period he began multi-instrumental improvisation.

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