Tori Amos’ days as a mainstream pop star are in the rearview mirror by at least a decade. But she remains a fine and distinctive record-maker, as evidenced by her latest effort, “Unrepentant Geraldines” – an album that is idiosyncratically non-poppy enough to be released on Mercury Records’ classical division. And yet Amos’ best medium remains live onstage, where she channels an almost feral intensity through her voice and piano. Amos will play Wednesday at Durham Performing Arts Center. Showtime is 7:30 p.m. and tickets are $51.38-$62.67. Details at dpacnc.com.