Some of the earliest works by American composer Phill Niblock, including three never before released pieces: "Index" (1969), "Tenor," and "Boston III" (both from 1972). Until now, it's been impossible to encounter Niblock's compositions from earlier than the 1960s, a reality thankfully rectified by the long overdue publication of this Boston/Tenor/Index LP on Alga Marghen.

"Tenor" (1972) represents the first evolution of Niblock's musical thought towards the aesthetics of microtones, overtones, and drones which the composer would develop in following decades. The piece was recorded by the photographer Martin Bough on tenor saxophone and gradually dubbed back and forth by the composer in his New York studio. "Boston III" (1972) was recorded at the Intermedia Sound studio in Boston with Rhys Chatham (flute, voice), Martin Bough (tenor saxophone), and Gregory Reeve (viola, voice); the composer himself also contributed with his voice. The LP also includes "Index" (1969), an improvised sound performance by the composer himself. Guitar (both its body and strings), fingers and fingering fuse in a vehement action around which barely listenable sounds and resonances vibrate. Considering the extended pulsation as an organic blend of impulse, rhythm, drive, strength, vitality and passion, the end of this sole solo in Niblock's complete oeuvre is not defined by the fixed duration of the piece but as the consequence of the tiredness of the performer. The music changes according to the loudness of playback. The interaction of the upper harmonics changes especially, with much richer overtone patterns being produced at louder levels.