The first word of the sub-title Metamorphoses nocturnes refers to the form. It is a kind of variation form, only there is no specific “theme” that is then varied. It is, rather, that one and the same musical concept appears in constantly new forms - that is why “metamorphoses” is more appropriate than “variations”. The quartet can be considered as having just one movement or also as a sequence of many short movements that melt into one another without pause or which abruptly cut one another off. The basic concept, which is always present in the intervals but which is in a state of constant transformation, consists of two major seconds that succeed each other transposed by a semitone. In this First String Quartet there are certainly some characteristics of my later music, but the writing is totally different, “old-fashioned”; there are still distinct melodic, rhythmic and harmonic patterns and bar structure. It is not tonal music, but it is not radically atonal, either. The piece still belongs firmly to the Bartók tradition (remember my situation as a composer in Hungary at the beginning of the fifties), yet despite the Bartók-like tone (especially in the rhythm) and despite some touches of Stravinsky and Alban Berg, I trust that the First String Quartet is still personal work.