John Hiatt’s 2014 album Terms of My Surrender finds the singer-songwriter at the top of his game, etching on-the-run narratives onto deft pickin’ and thunderous percussion work. He’s the rare songwriter who’s aged with an edge and takes that arc of life experience deep into his lyrical mindset. For tonight's show, another veteran — bluesman Taj Mahal — serves as the opening act. A terrific double bill. (Eric Sandy)