Collage In music, with the advances on recording technology, avant-garde artists started experimenting with cutting and pasting since the middle of the twentieth century. In the 1960s, George Martin created collages of recordings while producing the records of The Beatles. In 1967 pop artist Peter Blake made the collage for the cover of the Beatles seminal album "Sgt. Pepper's Lonely Hearts Club Band". In the 1970s and 1980s, the likes of Christian Marclay and the group Negativland reappropriated old audio in new ways. By the 1990s and 2000s, with the popularity of the sampler, it became apparent that "musical collages" had
Cultural impact of the Beatles as, in author Shawn Levy's description, "the world's first household psychedelics, avatars of something wilder and more revolutionary than anything pop culture had ever delivered before". Author Carys Wyn Jones locates "Sgt. Pepper's", along with "Pet Sounds", to the beginning of art rock. Both albums are largely viewed as beginnings in the progressive rock genre due to their lyrical unity, extended structure, complexity, eclecticism, experimentalism and influences derived from classical music forms. For several years following "Sgt. Pepper" release, straightforward rock and roll was supplanted by a growing interest in extended form. Several of the English psychedelic bands who followed