in 1970–1972, he collaborated with the international group the generals, and in 1972 he founded the rock group srce. with selected yugoslavian musicians, he founded the group september in 1975. their music consisted of jazz rock, and was recognised domestically and internationally. september used to be the ambassador of yugoslavian rock abroad; in the years 1976–1979 they were guests in the soviet union, belgium, italy, cuba, germany, france and finally united states, where they recorded their second album.