opus number Opus 15. year of composition 1969 movements 3 orchestration piano audio https://www.youtube.com/watch?v=7SHtYcX6Q5c duration 11 minutes score https://www.csermak.hu/zaray-vamosi-koszonet-a-boldog-evekertregi-slagerek-ma-i… creative period 2. middle period: pit digging 1968-1978.