On this day in music history: July 6, 1974 - “Rock Your Baby” by George McCrae hits #1 on the Billboard R&B singles chart for 2 weeks, also topping the Hot 100 for 2 weeks on July 13, 1974. Written and produced by Harry Wayne Casey and Richard Finch, it is the biggest hit for the Florida born and raised R&B vocalist. Casey and Finch will initially record “Rock Your Baby” as demo during off hours at TK Records studio in Miami, where they are working doing odd jobs. With the two playing all of the instruments, and using scrap tape from the studio (except guitar, played by KC & The Sunshine Band guitarist Jerome Smith), they will record the track in only 45 minutes, paying Smith $15 to play on the track. They will play the finished recording for execs at the label who will declare it “a smash” and to “not change a thing”. McCrae will walk into the studio the next day and hear the track. Casey and Finch will invite him to have a go at recording vocals, which he will complete in only two takes. “Rock Your Baby” will be a massive hit, not only in the US but internationally as well, also topping the UK singles chart and selling over eleven million copies worldwide. The record is also significant in being one of the first “disco” songs to break into the pop music mainstream, kicking off the Disco Era.