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Glam rock, the genre of Steve Harley's group Cockney Rebel, emerged in the early 1970s, blending elements of rock music with theatrical and extravagant aesthetics. Characterized by flamboyant costumes, glitter, and catchy melodies, glam rock captured the essence of theatricality and showmanship. This captivating movement influenced fashion, music, and pop culture, leaving a lasting impact on the music industry.