 Complete the following phrase:  In the 1960s Slabinac was a member of several rocknroll bands. He then opted for a solo career as a pop singer and moved to Zagreb. While performing in a club, he was noticed by Nikica Kalogjera who gave him a chance to appear as a newcomer at the 1969 Split Festival. A year later, in 1970, Slabinac won the first prize at the Opatija Festival. He represented Yugoslavia at the 