Equation were an English folk "supergroup" that formed in Devon in 1994. Initially comprising the three Lakeman Brothers Band (Sam Lakeman, Sean Lakeman and Seth Lakeman) and folk duo, Kate Rusby & Kathryn Roberts, they added a bassist (Darren Edwards), and a drummer (Ian Goodall) to form a folk-pop quintet Equation. In March 2006 the band announced a "pause" in their combined work. Since then Kate Rusby, Cara Dillon (who was also a member for a time) and Seth Lakeman have forged international careers.

Read more about Equation on Last.fm.