Luc Ferrari -- along with Pierre Schaeffer, Pierre Henry, François Bayle, and others -- is one of the pioneers of the particular style of tape music known as 'musique concrète'. More significantly, he must be counted as one of the most complexly, most idiosyncratically compelling of post-War composers. Ferrari has time and again ranged far afield of musique concrète, and Interrupteur/Tautologos 3 is one such foray into instrumental music. But what a setting-forth! Mon dieu! These particular realizations came about through Ferrari's directed improvisations of Konstantin Simonovitch's ensemble, and the recordings were originally released in 1970 by EMI in their 'Perspectives Musicales' series. 'Interrupteur' is largely static music, a music of long tones periodically interrupted by aleatoric events. If it references musical minimalism (particularly Terry Riley, Steve Reich, and Robert Ashley), this surely counts as an intuitive, very personal result. 'Tautologos 3' pursues the idea of the superposition of cycles of different lengths that, once set into motion, will continually result in new events. Conventionally understood, a tautology is a redundancy in which the same meaning is expressed in different works; the same things are 'said' repeatedly in 'Taulologos 3', but as the context shifts through the displacement of the various cycles, how could there be no gain, no furtherance of both logic and sensation? In a world: exhilarating.""Interrupteur" is from 1967 and features the following instrumentation: English horn, clarinet, bass clarinet, French horn, trumpet, violin, viola, cello, two percussions, two electric organs. It is one of the most outright powerful and devastating recordings within the avant garde realm. "Tautologos 3" is form 1970 and features: flute, oboe, clarinet, trumpet, trombone, viola, cello, double bass, electric guitar, electric organ & vibraphone.