SINCE their debut in 1969, Steeleye Span — who return to Hall for Cornwall this month — have been one of the most influential names in British folk and roots music. Pioneers of folk-rock, they changed the face of folk music forever, taking it from small clubs into the world of gold discs and international tours. Members have come and gone over the years, with past and present line-ups virtually a who's who of the British folk scene, but Steeleye have always remained an institution, at the forefront of the genre they helped to define. Steeleye Span 2008 finds Maddy Prior, the voice of the band for 34 years, back at the helm of a line- up featuring band stalwart and fiddler extraordinaire Peter Knight, Rick Kemp on bass, Ken Nicol (Albion Band) on guitar and vocals and Liam Genockey on drums. The concert starts at 8pm on Saturday, April 19. Tickets cost £16.50 and £14 with an 85p Theatre Fund payment from the box office on 01872 262466.