The Unthanks are an English folk group known for their eclectic approach in combining traditional English folk, particularly Northumbrian folk music, with other musical genres. Their debut album, Cruel Sister, was Mojo magazine's Folk Album of the Year in 2005. Of their subsequent albums, nine have received four or five-starred reviews in the British national press. Their album Mount the Air, released in 2015, won in the best album category in the 2016 BBC Radio 2 Folk Awards. In 2017 they released two albums featuring the songs and poems of Molly Drake, mother of singer-songwriter and musician Nick Drake.

Cruel Sister, the first album by English folk group Rachel Unthank and the Winterset was released on 11 May 2005 and launched at Holmfirth Festival of Folk. Described by BBC Music as "an outstanding debut", it received support from a number of DJs on BBC Radio 2 and was subsequently awarded Folk Album of the Year by MOJO.