Stephen Sondheim’s 1986 musical has taken its place as one of the master’s more popular works. The James Lapine book revolves around familiar fairytale characters, which explains in part the show’s enduring pull — the subject matter isn’t as offbeat as in Pacific Overtures or Assassins, to name just two of Sondheim’s many challenging efforts. Yet Into the Woods tampers boldly in Act 2 with its superficial family-friendliness, as he and Lapine investigate the darker side of wish fulfillment for Little Red Ridinghood, Jack (and his beanstalk), Rapunzel and Cinderella. The score is excellent, combining sophistication with accessibility, and if Studio Tenn Theatre Company brings its A-game, expect another worthy production of an opus that’s been presented successfully here in past seasons by Keeton Theatre and Boiler Room Theatre. Artistic director Matt Logan assembles a large and promising cast that includes Laura Matula, Kim Bretton, Nan Gurley, Patrick Waller, Matthew Carlton, Brent Maddox and New York imports Marissa Rosen and Joey Barreiro.