Effective period / Period of releases: 1971 - 1977

Actually Jean-Jacques Perrey's daughter Patricia Leroy. Like he said in an interview, she wouldn’t compose but give him ideas and play things on her organ so he gave her credit on those song. Also a legal background (like him signed to another label (Vanguard) that time) is possible for giving credits to her. Pat is a short of her first name and Prilly is the city in Switzerland where she was living.