Renée Fleming and Douglas Sills play married classical music stars sparring over rival memoirs in Joe DiPietro’s comedy

The acronym used in theater chatrooms to discuss the unlikely Broadway entry “Living on Love” is the same as the 21st century shorthand for hilarity: LOL. But there’s nothing contemporary and too little that’s consistently funny about playwright Joe DiPietro’s refried serving of “Peccadillo,” a minor Garson Kanin comedy from 1985. First seen at the Williamstown Theatre Festival last summer, the new version does have a thoroughbred casting coup in its favor, which is the sporting turn of celebrated lyric soprano Renée Fleming as fading opera diva Raquel De Angelis. But when Raquel is not onstage trilling with vainglorious self-adulation and encroaching terror of her professional decline, the fizz quickly evaporates. “Did I just hear the birds singing?” wonders Raquel as she glides into the room accompanied by her own airborne ribbon of “la-la-la’s.” “Oh no, that was me!” Her giddy delight in her gifts requires no external endorsements, and her lothario husband of 30 years, Italian classical conductor Vito (Douglas Sills), is mostly too intoxicated by his own talent and charms to supply them. But Raquel finds an adoring fan in Robert Samson (Jerry O’Connell), the latest in a series of ghostwriters hired by Vito’s publisher to work on his memoir, “Call Me Maestro,” before being customarily fired by the uncooperative subject.