** condition: NM/NM ** The “Sonatas and Interludes” are Cage's prepared piano masterwork. This was Cage's first composition using Hindu philosophy as a basis. The preparation of the piano is quite elaborate and takes between 2 to 3 hours to complete. A total of 45 notes are prepared, mainly with screws and bolts, but also 15 pieces of rubber, 4 pieces of plastic, 6 nuts, and one eraser. Legendary Yuji Takahashi performance recorded on July 26 and 27, 1965 at the Italian Institute in Stockholm, Sweden and originally issued by Fylkingen in 1966 as two separate LPs.