Founded in 1967, by the late Rev

From the jazz of the 1920s, the pop songs of the 1950s and 60s, the political rock era of the 1970s, and the growing commercialization of music in the 1980s and 90s, music has been a form of social expression. ... The sample was drawn from a list of songs within five genres on Billboard.com. ... twenty-eight had male lead singers and four had ... ................
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