'Rege' is written for two identical instruments (I,II) and one that is different (III). Part I can be played without the instrument's sound being altered, while Part II can be sounded by prepared, distorted or electronically modulated instrument. In changing the sonority, however, care should be taken that the original pitches should dominate, or, if that cannot be archieved, the pitch relationships should remain unaltered.Part III can be performed on any string or wind instrument possessing the original sound domain.The premiere took place on 26 October 1979 in Budapest, with Ilona Szeverényi (cimbalom), Tünde Enzsöl (prepared cimbalom) and Emil Ludmány (viola)