They may no longer be household names, but once Ian and Sylvia Tyson strummed beside the folk revival's elite. Those familiar with the complete basement recordings of Bob Dylan and the Band can attest to Dylan's affection for their repertoire, both original and traditional. The feeling was mutual. The duo was the first to record the Dylan classic "Tomorrow Is a Long Time" (included here). The title cut has become a standard, and it's fascinating to hear it beside the traditional songs that shaped the melody and lyric. Ian and Sylvia's harmonies may sound a bit dated in a folksy way, but their influence is evident in much of the early '60s folk and early '70s singer/songwriter movements. --Roy Kasten