Aside from Fairport Convention, Steeleye Span was the most successful and enduring British folk-rock band. The parallels between the bands are numerous: both updated traditional British folk material with rock arrangements, both featured an excellent female lead singer (Sandy Denny for Fairport, Maddy Prior for Steeleye Span), both frequently employed multi-part harmonies, and both mixed original and traditional songs. Although Fairport was more innovative in its early days, Steeleye Span was arguably the more interesting band after 1970, when personnel changes had gutted the original Fairport lineup. Steeleye Span, too, would undergo numerous personnel changes even at their peak. Prior was the constant factor that gave the group something of a recognizable identity at all phases of their journey.