Why was bill Haley important to the rock and roll explosion?

Bill Haley, 53, who helped make rock 'n roll a major part of the American musical idiom with his 1950s classic "Rock Around the Clock," died yesterday in his home in south Texas.Haley said. "Actually, it had been gathering momentum and when we made 'Rock Around the Clock' it just exploded.

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Led the first rock and roll band and had multiple hit songs

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answer; both a and b baroque renaissance;