System of a Down

Columbia Records is an American record label, owned by Japan's Sony Music Entertainment, operating under the Columbia Music Group with Aware Records. It was founded in 1888, evolving from an earlier enterprise, the American Graphophone Company—successor to the Volta Graphophone Company.... Columbia is the oldest brand name in pre-recorded sound, being the first record company to produce pre-recorded records as opposed to blank cylinders. Columbia Records went on to release records by an array of notable singers, instrumentalists, and bands. From 1961 to 1990, its recordings were released outside the U.S. and Canada on the CBS Records label before adopting the Columbia name in most of the world. Until 1989, Columbia Records had no connection to Columbia Pictures, which used various other names for record labels they owned, including Colpix and later Arista; rather, it was connected to the original owner, CBS, which stood for Columbia Broadcasting System.
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Sony Music Entertainment is the second-largest global recorded music company of the "big four" record companies and is controlled by Sony Corporation of America, the United States subsidiary of Japan's Sony Corporation. The company, which evolved into Sony Music, was founded in 1929 as the... American Record Corporation through the merger of several smaller record companies. In the depths of the Great Depression, the Columbia Phonograph Company in the U.S. was acquired by ARC in 1934. ARC was acquired in 1938 by the Columbia Broadcasting System . The Columbia Phonograph Company had international subsidiaries and affiliates such as the Columbia Graphophone Company in the United Kingdom, but they were sold off prior to CBS acquiring American Columbia. RCA Victor Records executive Ted Wallerstein convinced CBS head William S. Paley to buy ARC and Paley made Wallerstein head of the newly acquired record company. CBS made Columbia its flagship label with Okeh its subsidiary label while deemphasizing ARC's other labels.
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Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has... its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources. Musically, rock has centered around the electric guitar, usually as part of a rock group with bass guitar and drums. Typically, rock is song-based music usually with a 4/4 time signature utilizing a verse-chorus form, but the genre has become extremely diverse and common musical characteristics are difficult to define. Like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political in emphasis. The dominance of rock by white, male musicians has been seen as one of the key factors shaping the themes explored in rock music. Rock places a higher degree of emphasis on musicianship, live performance, and an ideology of authenticity than pop music.
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