The Happy Child is a story of "New Wave" rock genre predominant in the ex-Yugoslavia during the socialist 70's and 80's. The Happy Child is a story of "New Wave" rock genre predominant in the ex-Yugoslavia during the socialist 70's and 80's. The Happy Child is a story of "New Wave" rock genre predominant in the ex-Yugoslavia during the socialist 70's and 80's. The Happy Child is a story of "New Wave" rock genre predominant in the ex-Yugoslavia during the socialist 70's and 80's.