It was the rim shot heard 'round the world. "One, two, three o'clock, four o'clock rock. Five, six, seven o'clock, eight o'clock rock. Nine, ten, eleven o'clock, twelve o'clock rock. We're going to rock around the clock tonight." Fifty years ago today, on April 12, 1954, Bill Haley and the Comets stepped into New York City's Pythian Temple to record their debut single for Decca Records, "Rock Around the Clock," which became the first No. 1 rock 'n' roll record and the opening salvo in a worldwide pop revolt. continued...