Sarah McLachlan's heart-wrenching mezzo soprano radiates sensuality. With breakthrough hit “Vox,” the Canadian singer/songwriter skirts the edges of the folk canon, while on 1993's haunting “Possession,” her passionate vocals belie eerie lyrics written from the perspective of an overzealous fan. Cofounding all-female traveling festival Lilith Fair, she became the de facto face of women in rock during the '90s, but her atmospheric folk roots continued to shine through. On 2014's “In Your Shoes,” the slick production is a springboard for her ethereal voice.