A highly influential British band who helped deliver folk-rock to the mainstream in the mid-'70s, Steeleye Span have enjoyed a lengthy tenure at the vanguard of British roots music, innovating their country's traditional songs while adding a host of their own original material to its canon. Along with Fairport Convention, with whom they share many similarities, they are the most recognizable and enduring group to have sprung from Britain's late-'60s folk-rock movement. After a few fits and starts in the early '70s, the group hit their stride with inventive albums like Parcel o...