dans le Financial Times, le 10 mai 1976 :

… »We heard two versions of Bosseur’s Triptychs for solo and duo : the first, for solo piano, laid out in five pages of mixes verbal, graphic and conventional notation, I specially liked – a sequence of slow, Skryabin-clouded chords and cadences, punctuated by long silences filled in by the singing of the evening chorus of birds outside the hall : pretty alternation. The performane itself, by Lydia Domancic, chosen from a number of possible alternatives, had quiet, firm character. »