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.