What became Hot Chocolate's first UK number one single in 1977?

Hot Chocolate are a British soul band popular during the 1970s and 1980s, formed by Errol Brown and Tony Wilson. The act had at least one hit every year from 1970 to 1984, and their song "You Sexy Thing" made the Top 10 in three decades.

It was in the disco era of the mid-1970s that Hot Chocolate became a big success. A combination of high production standards, the growing confidence of the main songwriting team of Wilson and Brown, and tight vocal harmonies enabled them to secure further big hits such as "You Sexy Thing" and "Every 1's a Winner", which were also U.S. hits, peaking at #3 (1976) and #6 (1979), respectively. "Every 1's a Winner" featured a distinctive distorted guitar riff by Harvey Hinsley using a Roland GR-500. After Wilson's departure for a solo career, that included a 1976 album I Like Your Style, Brown assumed all songwriting duties. Wilson was initially replaced by Brian Satterwhite; before Satterwhite departed the band and Olive switched to bass as his primary instrument.

In 1977, after 15 hits, they finally reached Number One with "So You Win Again". It was one of the few of their recordings that was not written, at least partly, by Brown. The track was a Russ Ballard composition.