1. In 1979 "Jānis Lūsēns" joins "Juris Kulakovs" group "Arka". 2. After the "Juris Kulakovs" leaves the group in end of 1979, the group is renamed from "Arka" to "Zodiaks" 3. After release of albums "Disco Alliance" (1980) and "Music in Universe" the original group "Zodiaks" is dissolved. 4. In 1983 "Jānis Lūsēns" becomes the leader of group "Neptūns". 5. In 1986 the "Neptūns" splits into two groups: "Zodiaks" and "Neptūns" with new group members. "Disco Alliance", LP, Melodija, 1980 "Music in Universe", LP, Melodija, 1982 "Mākoņi", LP 1990