Complex sentence: During the 1960s, he promoted electronic music in his home country while in the 1970s, as a composer and researcher at Utrecht's Institute of Sonology, The Netherlands, he developed pioneering programs in the field of computer-generated music.
Split into simpler sentences: During the 1960s, he promoted electronic music in his home country. In the 1970s, as a composer and researcher at Utrecht's Institute of Sonology, The Netherlands, he developed pioneering programs in the field of computer-generated music.