Although Bill Haley and the Comets' "Rock Around the Clock" from the movie "The Blackboard Jungle" (1955) is commonly thought of as being the first rock-and-roll record, there are apparently other possibilities.
Before "Rock Around the Clock" they also released "Crazy, Man, Crazy," an original song that became the first rock and roll record to make Billboard's pop chart.
http://www.hotshotdigital.com/OldRock/BillHaleyBio.htmlBut wait - there's more -
Some other contenders are: "The Fat Man" by Fats Domino (1949), "Rocket 88" by Jackie Brenston (1951) and "Sh-Boom" by The Cords (March, 1954).
http://www.mjet.com/hepcat/history2.htmTurn the time machine back even further and you find Wynonie Harris' "Good Rockin' Tonight" (1948) and Freddie Slack's "House Of Blue Lights" (1946).
And there are others such as Arthur Smith's "Guitar Boogie" (the first national hit with electric guitar, 1948), The Dominoes' infamous "Sixty Minute Man" (1951), Lloyd Price's raw R&B smash "Lawdy Miss Clawdy" (1952), "Big Mama" Thorton's original version of "Hound Dog" (1953), and the Crows' remarkable "Gee" (1953).
http://oldies.about.com/library/weekly/aa062302a.htm