this CD includes works for ensemble and soloist xenakis. The second cd is centered on the harpsichord, alone or accompanied. It is difficult to say whether these parts are interpreted as this is often the only enrgistrement. Anyway my point of view he has all the qualities of a good interpétation Xenakis. Tremendous energy that moves all and a rich, warm tone. The instruments do not have an aggressive sound but raw, brute (unlike xenakis tamayo of which is cold and aggressive). I must say that I have a clear preference for harpsichord which uses very well xenakis the possibilities of the modern harpsichord (the overtone and also the rapid alternations of loud and soft pedal that give the impression that someone is playing with the volume button) I recommend this cd (in addition to those who love xenakis) those who want to find out. The harpsichord pieces are very rhythmic and quickly took it.