In case you missed the Arts Electronica festival in Linz, Austria, in 1986-at which the renowned composer mixed tracks in a glass pyramid suspended over an audience of 80,000-this greatest hits compilation brings together some of his best prog-rock of the '70s. The master of the "Sound Cloud" concert puts the Moog synthesizer to good use on classical pieces including Debussy's Claire de Lune ; Mussorgsky's Pictures at an Exhibition ; Strauss' Also Sprach Zarathustra ; Pachelbel's Canon in D , and even the main title to Star Wars !