Roberto Cacciapaglia is an Italian composer and pianist who started out in the fertile Milan avant-garde scene of the 1970s, which included Franco Battiato, Giusto Pio, Lino Capra Vaccina, Francesco Messina, among others. After studying at the conservatory, he worked at RAI's Studio of Musical Phonology – an electronic music laboratory similar to NDR/WDR in Germany, GRM/IRCAM in France or BBC Radiophonic Workshop.

Sonanze (Sonatas) is Cacciapaglia's debut album, a monumental work that was recorded over a two-year period and released in 1975 via seminal German label Die Kosmischen Kuriere (Ohr). While a "sonata" is traditionally performed by easily distinguishable instrumentalists (often soloist and accompaniment) and with repeated structural themes, Cacciapaglia flips this hierarchical form on its head – blending harpsichord, strings, brass and analog synths to create ambient mini-soundtracks. As the composer writes in the original sleeve notes, "I am aware, unfortunately, that I am a few millennia late in how I would like music to be understood, which today I find diluted in its primary powers, in an era that is destructive of essential values. Precisely for this reason, I want to search for it in depth and not on the surface, perhaps alternating the knob of a synthesizer with a marranzano (mouth harp)."

Mixed in quadrophonic surround-sound under the auspices of Rolf-Ulrich Kaiser (celebrated producer of Tangerine Dream and Ash Ra Tempel), Sonanze remains on the fringe of Kosmische realms. Each movement explores hypnotic rhythms, intuitive arrangements, musique concrète techniques and a pure psychedelic awakening.