Parks’ pedal steel moves between sounding like itself and a clarinet. Goldings’ alternating B-3 and Rhodes piano offer wonderful color contrast and make it swing. Her take on “Bye Bye Love” feels as if it’s being narrated to a confidante, and juxtaposes early Western swing with a bluesy stroll. A rock guitar introduces “I Can’t Stop Loving You,” but Peyroux’s phrasing has more country-blues in it than we’ve heard from her before. The use of a trumpet in “Born To Lose” and “You Don’t Know Me,” with Mendoza’s dreamy strings, allow for Peyroux to deliver her most stylized jazz performances on the set. Buddy Holly’s “Changing All the Changes” contains the same happy bump as the original, but there isn’t any ache in Peyroux’s vocal; it’s all declaration. The simmering, busted blues in Randy Newman’s “Guilty” reveals he could have written the tune for Little Willie John or Patsy Cline. Both singer and producer prove that John Hartford’s “Gentle On My Mind” can be as much a jazz-pop tune as a country song. The shuffling train motion in Glen Campbell’s iconic version has been traded for a less hurried pace. Peyroux employs her Billie Holiday-influenced phrasing to excellent effect. Mendoza’s restrained strings color the tune from a simple, directly conveyed love song to an intimate reverie offered over time and distance; Goldings’ shimmering piano and Parks’ ringing guitar make it nearly elastic. Warren Zevon’s “Desperadoes Under the Eaves” illustrates better than any selection here that Charles’ approach to country to transcend genre and tell universal stories was indeed genius. Peyroux, her band, and Mendoza’s strings offer a nearly cinematic legend of old Hollywood envisioned through the eyes of one of its most seasoned and heartbroken denizens. The singer leans out of the arrangements and into the depths of her heart, conveying loss and loneliness to the listener directly. “The Blue Room” is a brave experiment, but one that pays off handsomely. For anyone who hasn’t spent time with Charles’ classic country recordings, it doesn’t matter, because what’s here stands confidently on its own; for those who have, that experience will provide an additional reward.