Led Zeppelin

Swan Song Records was a record label launched by the English rock band Led Zeppelin on 10 May 1974. It was overseen by Led Zeppelin's manager Peter Grant and was a vehicle for the band to promote its own products as well as sign artists who found it difficult to win contracts with other major... labels. The decision to launch the label came after Led Zeppelin's five year contract with Atlantic Records expired at the end of 1973. Atlantic Records ultimately distributed the label's product. Artists that released material on the Swan Song label during its existence included Led Zeppelin itself ; Bad Company; The Pretty Things; Dave Edmunds; Mirabai; Maggie Bell ; Detective; and Sad Café. In addition to these artists, two other noted recording acts were credited artists on Swan Song singles, both of which were UK hits in 1981: B. A. Robertson duetted on with Maggie Bell on the single "Hold Me", and The Stray Cats backed Dave Edmunds on his 1981 single "The Race Is On".
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Polydor is a record label owned by Universal Music Group, headquartered in the United Kingdom. Polydor was originally an independent branch of the Deutsche Grammophon Gesellschaft. Its name was first used as an export label in 1924, the British and German branches of the Gramophone Company having... severed their ties during World War I. Deutsche Grammophon claimed the rights to the His Master's Voice trademark for Germany, where HMV recordings were released under the Electrola trademark. In turn, DGG records exported out of Germany were released on the Polydor label. Polydor became a popular music label in 1946 while Deutsche Grammophon became a classical music label. The German rights to the His Master's Voice trademark was sold by Deutsche Grammophon to the Electrola Records unit of EMI in 1949. Polydor remained Deutsche Grammophon's export label, including classical music, in France and the Spanish-speaking world for the remainder of the long-playing era, as a result of language and cultural concerns. In the early 1960s orchestra leader Bert Kaempfert signed unknowns Tony Sheridan and the Beat Brothers - who would later become famous as The Beatles - to Polydor.
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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 centred around the electric guitar, usually as part of a rock group with bass guitar and drums. Typically, rock is song-based music with a 4/4 beat 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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