A mostly solo show (with a backing band) about how one woman learned to stop worrying and embrace the sins of the flesh? Sounds like a solipsistic proposition. And that first-person pronoun in the title sure doesn't help.

But 7 Deadly Sins is more of a cabaret-­concert, a song cycle with bits of fictional monologue dropped between the numbers. Eva Moon is a lady of a certain age (her words) and tells a Christmas Carol–like fable about a night when her younger good-girl self is visited by seven spirits who instruct her in the pleasures of being bad. They foist baths, chocolates, fancy clothes, a large purple vibrator, and a few other trinkets on Moon, who responds by singing songs—many drawn from the existing back catalog of her jazzy/bluesy band the Lunatics. Moon and the Lunatics sound like the kind of background band you'd hear in the bar of a very nice hotel in Asia: technically tight and thoroughly inoffensive (minus a few cuss words and that dildo). Oddly, there are no songs of regret or the complications that a life of sin can bring. For a show about sin, Sins is frustratingly harmless.