Arnold Dreyblatt (b. New York City, 1953) is an American composer and visual artist. He studied with Pauline Oliveros, La Monte Young, and Alvin Lucier and has been based in Berlin, Germany since 1984.

His compositions are based on harmonics, and thus just intonation, played either through a bowing technique he developed for his modified bass, a children's piano he specially tuned, or conventional instruments. He originally used only a steady pulse provided by the bowing motion on his bass (placing his music in the minimal category), but he eventually added many more instruments and more rhythmic variety.
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