In 1951 a western swing bandleader named Bill Haley recorded a version of "Rocket 88" with his group, the Saddlemen. It is considered one of the earliest recognized rockabilly recordings. It was followed by versions of "Rock the Joint" in 1952, and original works such as "Real Rock Drive" and "Crazy Man, Crazy", the latter of which reached number 12 on the American Billboard chart in 1953. On April 12, 1954, Haley, performing with his band as Bill Haley and His Comets, recorded "Rock Around the Clock" for Decca Records of New York City. When first released in May 1954, "Rock Around the Clock" made the charts for one week at number 23, and sold 75,000 copies. In 1955, it was featured in the film Blackboard Jungle, resulting in a resurgence of sales. The song hit No. 1, held that position for eight weeks, and was the number two song on the Billboard Hot 100 chart for 1955. The recording was, until the late 1990s, recognized by Guinness World Records as having the highest sales claim for a pop vinyl recording, with an "unaudited" claim of 25 million copies sold.