The occasional collaboration project between two Slovak influential rock musicians, singer (and rhythm guitarist) Pavol Hammel (leader of the band Prúdy) and keyboardist Marián Varga (founder and leader of the highly acclaimed progressive rock band Collegium Musicum) had its roots in late sixties, when Marián Varga, had become a member of Prúdy for around two years. As a duo, they released four albums: - Zelená pošta (Green Mail) - 1972 - Na druhom programe sna (The 2nd dream channel) - 1976 Read more on Last.fm