Synth-pop (1981), which produced a series of hit singles. These included "Don't You Want Me", which reached number one in the UK at the end of 1981. Synth-pop reached its commercial peak in the UK in the winter of 1981–2, with bands such as Orchestral Manoeuvres in the Dark, Japan, Ultravox, Soft Cell, Depeche Mode and even Kraftwerk, enjoying top ten hits. In early 1982 synthesizers were so dominant that the Musicians Union attempted to limit their use. By the end of 1982, these acts had been joined in the charts by synth-based singles from Thomas Dolby, Blancmange, and Tears for
Hit song digital downloads. 2011 was a record year for UK singles sales. Actual figures vary considerably depending on the time of year. In 2010 a number one single usually sold around 100,000 copies per week; sales of around 30,000 were often sufficient to reach the top ten, and a single selling over 6,000 copies could make the top forty. Record companies often release collections of hit singles by various artists as compilation albums, such as the "Now That's What I Call Music!" series. Well-known bands and artists also frequently release collections of their most popular singles as "Greatest hits" albums. Hit