The Hues Corporation's 1974 "Rock the Boat", a US number-one single and million-seller, was another one of the early disco songs to reach number one. The same year saw the release of "Kung Fu Fighting", performed by Carl Douglas and produced by Biddu, which reached number one in both the UK and US, and became the best-selling single of the year and one of the best-selling singles of all time with 11 million records sold worldwide, helping to popularize disco to a great extent. Another notable disco success that year was George McCrae's "Rock Your Baby": it became the United Kingdom's first number one chart disco single.