On his debut, Battle Mountain, Ben Flocks turned loose his own vision of the Americana jazz so closely associated with the legendary Bill Frisell. For his sophomore release, the saxophonist shifts from Americana to the American Songbook, and shows that this change, depending on the context, is one that’s as nuanced as it is dramatic. Songs from Billie Holiday, Frank Sinatra, Sam Cooke, Roy Orbison, and Patti Page are interspersed among Flocks’s originals, and speak to the melodic warmth that made those musicians so special. Speaking of special: Don’t forget to also check out Flocks’s debut. It’s solid top to bottom, with an opening track that is the gold standard for introductions.