Amanda Marshall made a big splash on Canadian pop radio in the ’90s, before legal woes put her career on hold. But the three albums she released between 1995 and 2001 showcase the staggering, gritty-to-graceful range of her voice, be it the Stonesy swagger of “Best of Me” or the string-spiked R&B of “Brand New Beau”. And “I’ll Be Okay”, her contribution to My Best Friend’s Wedding, fortifies her canon of wistful, folk-soul serenades.