Whod have guessed that Nathaniel Hawthornes The Scarlet Letter would be a ripe fruit for an adaptation into a rock opera? Yet Mark Governors creation for an ensemble of 10 uses the saga of Puritan guilt as a valid exploration of The Interior of a Heart (one of the song titles). The storys righteous cruelty and persecution, often tethered to hypocrisy, are threads of the American psyche that extend from our Puritan heritage, and may partly explain contemporary gulfs of incomprehension between the United States and the rest of the world. Governors focus, however, is on intimate relations, pondering in song why people must hate, while the larger ramifications are mere spinoffs. Katrina Lenk plays outcast adulteress Hester Prynne, stuck in 1645 Boston, with dour elegance and a quavering soprano that sounds a bit like Joni Mitchells. The secret of her lovers identity drives the plot, while her diabolical husband (Danny Shorago, in a performance that suggests a Hells Angel in 300 years to come) devotes his energies to making her life, and that of the man he suspects of having cuckolded him, a living hell. Condensed into a musical-theater frame, Hawthornes story emerges as overly melodramatic and sentimental, until Hesters daughter (Laura Darrell) spurns her own mother, causing our lead characters to start to define morality in terms larger than their own persecution. Mark Lunas gentle, self-tortured Rev. Dimmesdale holds his own vocally, under director-choreographer Janet Rostons snappy staging, largely defined by Leah Piehls costumes, which transform the eras work boots into tall, lacy, fetishy things you can find in your local galleria. Even the buttons and laces of the neck-high blouses get replaced by rubbery attire for some fleshy dances by some sprites in the woods. The production wavers between soulful insight and wearying cheesiness, and isnt helped by the tinny sound of the synthesized accompaniments. This is all worth repairing. Wednesdays, 8 p.m. Starts: June 11. Continues through July 16, 2008