Fronted by Don and Karen Peris, the Sonny & Cher of folk-pop, the Innocence Mission began plying their wispy, gentle trade in the late 1980s, reaching their peak of popularity in the first half of the '90s. They've taken breaks since then, and worked on some extracurricular projects, but they never went away or broke stride. WE WALKED IN SONG attests to the latter, as Karen's fragile, Natalie Merchant-meets-Bjork croon trips lightly through a woody glen of acoustic guitars and warm, organic keyboards. For some, this pastel-pop approach might echo bygone days of Lilith Fair, but the dewy-eyed honesty of WE WALKED IN SONG is just as likely to resonate with those who follow the quirky but sincere neo-folk of Joanna Newsom or Lavender Diamond.