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In page Yamaha DX7:

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A few musicians skilled at programming the DX7 found employment creating sounds for other acts.[9] Brian Eno learnt to program the DX7 in depth and used it to create ambient music on his 1983 album Apollo: Atmospheres and Soundtracks.[1] He shared instructions for recreating his patches in a 1987 issue of Keyboard magazine.[3] As a producer, Eno used the DX7 on records by U2 and Coldplay.[1] In later years, the DX sounds came to be seen as dated or cliched, and interest in FM synthesis declined, with used digital synthesizers selling for less than analog.[1]