of Kaegi's unique record release, a 7-inch record titled Von Sinuston zur elektronischen Musik ("From Sine Wave to Electronic Music"). In the 12 pages accompanying booklet, Kaegi analyses the basic constituents of electronic music like sine wave, sound synthesis, ring modulation or electronic oscillator, with sound examples provided on the disc as well as excerpts from his most recent works of the time, Kyoto, 1970, Thai Clarinet, 1970, Hydrophonie I, 1969 and Illumination Expo'70 Osaka, 1969. The latter piece was commissioned by the Swiss government to be used as background music for the Swiss pavilion at the World Expo '70 in Osaka, Japan, a project he undertook with composer and contemporary music promoter André Zumbach (born 1931), then head of music at Radio Suisse Romande. At Instituut voor Sonologie (1971–1987) In 1969, Kaegi was invited to compose at Utrecht's Institute of Sonology, formerly known as STEM, in The Netherlands, where he created the tape music of Hydrophonie I. Owing to a grant from the Swiss government, he permanently relocated to The Netherlands in 1971 to work at the Institute and soon became a member of the board of directors. At the Institute, Kaegi worked as a composer, researcher and teacher in the field of electronically generated music and composition – his students have among others included Benno Ammann, Lasse Thoresen, Jos Janssen, Cort Lippe, Kathleen St John, Trevor Batten, Maarten In 't Veld, Martin Supper, Peter Pabon, Kees van Prooijen. After Floris van Maanen the Canadian composer Paul Goodman, born 1955, became his assistant in the 1980s. Between 1973 and 1978, together with Dutch researcher Stan Tempelaars (1938–2010), Kaegi developed the VOSIM program. VOSIM, which stands for VOice SIMulator, is a system based on the digital sound synthesis of simple, sinusoidal square waves, allowing the modeling of vowel sounds, vocal fricatives and quasi-instrumental tones. It complemented, and was used in conjunction with, Gottfried Michael Koenig's own computer-generated music programs Project 1 (1964), Project 2 (1966) and SSP (1971). Werner Kaegi summed up the VOSIM system in 1986 in a presentation for the scientific journal Interface. In 1987, Kaegi was awarded a prize at the 15th Bourges international electroacoustic competition, in Bourges, France, for his piece Ritournelles, for soprano and VOSIM software. He apparently ceased teaching and composing after 1987. Notable compositions Lieder (Marienlieder, Für Lilly, Verschwiegene Liebe, Zwei Lieder für Sopran und Klavier, Ramona) with lyrics by Joseph Von Eichendorff,