Brandi Carlile and her indispensable collaborators, Tim and Phil Hanseroth, a.k.a. The Twins, have always offered listeners both control and abandon, often within a single song. The most well-known Brandi Carlile tunes, 2007’s “The Story” and 2012’s “That Wasn’t Me,” are dynamic journeys in themselves, encompassing myriad emotions and varied stylistic touches. The Firewatcher’s Daughter, her latest release, marks a triumphant return after a three-year recording hiatus, and her strongest, most rock & roll album to date. Savannah Conley is a Nashville-based singer-songwriter whose debut EP, 18th and Portland, displays musical maturity and a knack for good melodies.