1990 saw a dramatic shift in pop, and an unexpected classic becoming the year's biggest single - Unchained Melody by The Righteous Brothers

The track spent seven weeks at Number 1 on the Official Singles Chart between May - July that year thanks to its inclusion in the hit film Ghost. Originally a modest Number 14 hit in 1965, the big ballad by the US duo sold just under 840,000 copies to finish as the UK's best-seller of 1990, according to Official Charts Company data. A re-issue of their 1965 UK breakthrough hit You've Lost That Lovin' Feelin' was also a hit in December that year, peaking at Number 3.