linguistic:voice_change
1960s: fame

Cage was affiliated with Wesleyan University and collaborated with members of its music department from the 1950s until his death in 1992. At the university, the philosopher, poet, and professor of classics Norman O. Brown befriended Cage, an association that proved fruitful to both. In 1960 the composer was appointed a fellow on the faculty of the Center for Advanced Studies (now the Center for Humanities) in the Liberal Arts and Sciences at Wesleyan, where he started teaching classes in experimental music. In October 1961, Wesleyan University Press published Silence, a collection of Cage's lectures and writings on a wide variety of subjects, including the famous Lecture on Nothing that was composed using a complex time length scheme, much like some of Cage's music. Silence was Cage's first book of six but it remains his most widely read and influential. In the early 1960s Cage began his lifelong association with C.F. Peters Corporation. Walter Hinrichsen, the president of the corporation, offered Cage an exclusive contract and instigated the publication of a catalog of Cage's works, which appeared in 1962.

Edition Peters soon published a large number of scores by Cage, and this, together with the publication of Silence, led to much higher prominence for the composer than ever before—one of the positive consequences of this was that in 1965 Betty Freeman set up an annual grant for living expenses for Cage, to be issued from 1965 to his death. By the mid-1960s, Cage was receiving so many commissions and requests for appearances that he was unable to fulfill them. This was accompanied by a busy touring schedule; consequently Cage's compositional output from that decade was scant. After the orchestral Atlas Eclipticalis (1961–62), a work based on star charts, which was fully notated, Cage gradually shifted to, in his own words, "music (not composition)." The score of 0′00″, completed in 1962, originally comprised a single sentence: "In a situation provided with maximum amplification, perform a disciplined action", and in the first performance the disciplined action was Cage writing that sentence. The score of Variations III (1962) abounds in instructions to the performers, but makes no references to music, musical instruments, or sounds.

Many of the Variations and other 1960s pieces were in fact " happenings ", an art form established by Cage and his students in late 1950s. Cage's "Experimental Composition" classes at The New School have become legendary as an American source of Fluxus, an international network of artists, composers, and designers. The majority of his students had little or no background in music. Most were artists. They included Jackson Mac Low, Allan Kaprow, Al Hansen, George Brecht, Ben Patterson, and Dick Higgins, as well as many others Cage invited unofficially. Famous pieces that resulted from the classes include George Brecht's Time Table Music and Al Hansen's Alice Denham in 48 Seconds. As set forth by Cage, happenings were theatrical events that abandon the traditional concept of stage-audience and occur without a sense of definite duration. Instead, they are left to chance. They have a minimal script, with no plot. In fact, a "happening" is so-named because it occurs in the present, attempting to arrest the concept of passing time. Cage believed that theater was the closest route to integrating art and real life. The term "happenings" was coined by Allan Kaprow, one of his students, who defined it as a genre in the late fifties. Cage met Kaprow while on a mushroom hunt with George Segal and invited him to join his class. In following these developments Cage was strongly influenced by Antonin Artaud 's seminal treatise The Theatre and Its Double, and the happenings of this period can be viewed as a forerunner to the ensuing Fluxus movement. In October 1960, Mary Bauermeister 's Cologne studio hosted a joint concert by Cage and the video artist Nam June Paik (Cage's friend and mentee), who in the course of his performance of Etude for Piano cut off Cage's tie and then poured a bottle of shampoo over the heads of Cage and Tudor.

In 1967, Cage's book A Year from Monday was first published by Wesleyan University Press. Cage's parents died during the decade: his father in 1964, and his mother in 1969. Cage had their ashes scattered in Ramapo Mountains, near Stony Point, and asked for the same to be done to him after his death.