opus number Opus 18. year of composition 1970 movements 2 orchestration piano oboe audio https://www.youtube.com/watch?v=Tqvu7LYR28c duration 3 minutes 30 seconds score https://www.kotta.info/hu/product/6557/BOZAY-ATTILA-Tetelpar creative period 2. middle period: pit digging 1968-1978.