John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer, music theorist, artist, and philosopher. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments, Cage was one of the leading figures of the post-war avant-garde. Critics have lauded him as one of the most influential composers of the 20th century. He was also instrumental in the development of modern dance, mostly through his association with choreographer Merce Cunningham, who was also Cage's romantic partner for most of their lives. Cage is perhaps best known for his 1952 composition 4′33″, which is performed in the absence of deliberate sound; musicians who present the work do nothing aside from being present for the duration specified by the title. The content of the composition is not 'four minutes and 33 seconds of silence,' as is often assumed, but rather the sounds of the environment heard by the audience during performance. The work's challenge to assumed definitions about musicianship and musical experience made it a popular and controversial topic both in musicology and the broader aesthetics of art and performance. Cage was also a pioneer of the prepared piano (a piano with its sound altered by objects placed between or on its strings or hammers), for which he wrote numerous dance-related works and a few concert pieces. The best known of these is Sonatas and Interludes (1946–48). His teachers included Henry Cowell (1933) and Arnold Schoenberg (1933–35), both known for their radical innovations in music, but Cage's major influences lay in various East and South Asian cultures. Through his studies of Indian philosophy and Zen Buddhism in the late 1940s, Cage came to the idea of aleatoric or chance-controlled music, which he started composing in 1951. The I Ching, an ancient Chinese classic text decision-making tool, which uses chance operations to suggest answers to questions one may pose, became Cage's standard composition tool for the rest of his life. In a 1957 lecture, Experimental Music, he described music as 'a purposeless play' which is 'an affirmation of life – not an attempt to bring order out of chaos nor to suggest improvements in creation, but simply a way of waking up to the very life we're living'. Cage was born September 5, 1912, at Good Samaritan Hospital in downtown Los Angeles. His father, John Milton Cage Sr. (1886–1964), was an inventor, and his mother, Lucretia ('Crete') Harvey (1885–1969), worked intermittently as a journalist for the Los Angeles Times. The family's roots were deeply American: in a 1976 interview, Cage mentioned that George Washington was assisted by an ancestor named John Cage in the task of surveying the Colony of Virginia. Cage described his mother as a woman with 'a sense of society' who was 'never happy', while his father is perhaps best characterized by his inventions: sometimes idealistic, such as a diesel-fueled submarine that gave off exhaust bubbles, the senior Cage being uninterested in an undetectable submarine; others revolutionary and against the scientific norms, such as the 'electrostatic field theory' of the universe. John Milton Sr. taught his son that 'if someone says 'can't' that shows you what to do.' In 1944–45 Cage wrote two small character pieces dedicated to his parents: Crete and Dad. The latter is a short lively piece that ends abruptly, while 'Crete' is a slightly longer, mostly melodic contrapuntal work. Cage's first experiences with music were from private piano teachers in the Greater Los Angeles area and several relatives, particularly his aunt Phoebe Harvey James who introduced him to the piano music of the 19th century. He received first piano lessons when he was in the fourth grade at school, but although he liked music, he expressed more interest in sight reading than in developing virtuoso piano technique, and apparently was not thinking of composition. During high school, one of his music teachers was Fannie Charles Dillon. By 1928, though, Cage was convinced that he wanted to be a writer. He graduated that year from Los Angeles High School as a valedictorian, having also in the spring given a prize-winning speech at the Hollywood Bowl proposing a day of quiet for all Americans. 'By being hushed and silent, he said, 'we should have the opportunity to hear what other people think',' anticipating 4′33″ by more than thirty years. Cage enrolled at Pomona College in Claremont as a theology major in 1928. Often crossing disciplines again, though, he encountered at Pomona the work of artist Marcel Duchamp via professor José Pijoan, of writer James Joyce via Don Sample, of philosopher Ananda Coomaraswamy and of Cowell. In 1930 he dropped out, having come to believe that 'college was of no use to a writer' after an incident described in the 1991 autobiographical statement: Cage persuaded his parents that a trip to Europe would be more beneficial to a future writer than college studies. He subsequently hitchhiked to Galveston and sailed to Le Havre, where he took a train to Paris. Cage stayed in Europe for some 18 months, trying his hand at various forms of art. First he studied Gothic and Greek architecture, but decided he was not interested enough in architecture to dedicate his life to it. He then took up painting, poetry and music. It was in Europe that, encouraged by his teacher Lazare Lévy, he first heard the music of contemporary composers (such as Igor Stravinsky and Paul Hindemith) and finally got to know the music of Johann Sebastian Bach, which he had not experienced before. After several months in Paris, Cage's enthusiasm for America was revived after he read Walt Whitman's Leaves of Grass – he wanted to return immediately, but his parents, with whom he regularly exchanged letters during the entire trip, persuaded him to stay in Europe for a little longer and explore the continent. Cage started traveling, visited various places in France, Germany and Spain, as well as Capri and, most importantly, Majorca, where he started composing. His first compositions were created using dense mathematical formulas, but Cage was displeased with the results and left the finished pieces behind when he left. Cage's association with theater also started in Europe: during a walk in Seville he witnessed, in his own words, 'the multiplicity of simultaneous visual and audible events all going together in one's experience and producing enjoyment.'