Swiss Chalet Media On May, 2 1980, Zjaki Willems, producer at BRT TV RandMuziek program , organised a performance of COS, Swiss Chalet with Pascale Son, Charles Loos, Daniel Schell, Mutsari, Philippe Allaert and guests. COS performing Swiss Chalet in Manresa, Spain, Catalonia, on September,22 1979. Concert organised with the help of our producer Jordi Garcia. This was the African part of Swiss Chalet. From L to R: Pascale Son,voc- Philippe Allaert, drums- Jean Mutsari, bass- Daniel Schell, guitar.