Musicians say social media is part of their job, just like touring is, but that it takes time away from their real work or writing, rehearsing and recording songs.
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Tina Turner performing at Central Park in 1969. Musician Jan Seides sees her as part of a generation that wasn't afraid to be "flamboyant, exuberant, sexy" and prefigured the styles of Lady Gaga and Beyonce.
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