The Imaginary Landscape series is by a composer from this country who used the prepared piano in his Sonatas and Interludes.
A composer from this country coined the term "dissonant counterpoint," and his wife wrote a 1931 string quartet with a sound mass third movement. A long-lived composer from this country wrote Night Fantasies and developed metric modulation, which he used in pieces like his five string quartets. A composer from here consulted the I Ching for his aleatory (*) Music of Changes. A piece from this country consists of 53 phrases to be repeated over a constant C beat; that piece is In C. The Imaginary Landscape series is by a composer from this country who used the prepared piano in his Sonatas and Interludes. That composer wrote three movements lacking notes in a silent piece for David Tudor. For 10 points, name this home of Elliott Carter, Terry Riley, and the composer of 4'33", John Cage.
A composer from this country coined the term "dissonant counterpoint," and his wife wrote a 1931 string quartet with a sound mass third movement.
United States of America [or United States; or U.S.A.]