Dark Side of the Moon

Pink Floyd were an English rock band that achieved international success with their progressive and psychedelic rock music marked by the use of philosophical lyrics, sonic experimentation, and elaborate live shows. One of the most commercially successful and influential rock groups in the history of popular music, they have sold over 200 million albums worldwide, including 74.5 million certified units in the United States. In 1996 they... were inducted into the Rock and Roll Hall of Fame. The band originally consisted of university students Roger Waters, Nick Mason, Richard Wright, and Syd Barrett. Founded in 1965, they gained popularity performing in London's underground music scene during the late 1960s. Under Barrett's creative leadership they released two charting singles, "Arnold Layne" and "See Emily Play", and a successful début album, The Piper at the Gates of Dawn . Guitarist and vocalist David Gilmour joined as a fifth member in December 1967, several months prior to Barrett's April 1968 departure due to deteriorating mental health.
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Electronic music is music that employs electronic musical instruments and electronic music technology in its production. In general a distinction can... be made between sound produced using electromechanical means and that produced using electronic technology. Examples of electromechanical sound producing devices include the telharmonium, Hammond organ, and the electric guitar. Purely electronic sound production can be achieved using devices such as the Theremin, sound synthesizer, and computer. Electronic music was once associated almost exclusively with Western art music but from the late 1960s on the availability of affordable music technology meant that music produced using electronic means became increasingly common in the popular domain. Today electronic music includes many varieties and ranges from experimental art music to popular forms such as electronic dance music. The ability to record sounds is often connected to the production of electronic music, but not absolutely necessary for it. The earliest known sound recording device was the phonautograph, patented in 1857 by Édouard-Léon Scott de Martinville. It could record sounds visually, but was not meant to play them back.
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