Following her first three albums, all of which were wildly eclectic affairs, Bonnie Raitt was poised for a mainstream move, and 1974's Streetlights is it. There's no blues edge here whatsoever, and Raitt's guitar playing is subdued--both detractions--but the album also introduces"Angel from Montgomery," the definitive version of John Prine's piercing ballad. Raitt dips further into contemporary singer-songwriter fare with Joni Mitchell's"That Song About the Midway" and James Taylor's"Rainy Day Man," but the album peaks with Allen Toussaint's thoughtful (and funky)"What Is Success."