 One, two, three o'clock, four o'clock, rock. Five, six, seven o'clock, eight o'clock, rock. One, ten, eleven o'clock, twelve o'clock, rock. We're gonna rock around the clock tonight. Birthday today, Bill Haley. William John Clifton Haley, singer-guitarist. Bill Haley in the comments. Of course, this one, one of the earliest big hits.