Jon Hassell (1937–2021) was an American trumpeter and composer renowned for pioneering "Fourth World" music—a fusion of traditional ethnic sounds with modern electronic techniques. After studying under Karlheinz Stockhausen in Germany, he collaborated with minimalist composers Terry Riley and La Monte Young, and studied Indian classical music with Pandit Pran Nath. His 1980 collaboration with Brian Eno, "Fourth World, Vol. 1: Possible Musics," introduced his innovative style to a broader audience. Hassell's distinctive trumpet sound and genre-blending compositions influenced artists like Peter Gabriel, Talking Heads, and David Sylvian. His debut album, "Vernal Equinox" (1977), is considered a seminal work in ambient music. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Jon_Hassell?utm_source=openai))