I’m happy to announce more good news about Broadway Blessing. The Essentials, a New York-based company that collaboratively creates innovative theatre, will be appearing, along with the previously announced Lynn Redgrave, Boyd Gaines, Project Dance and others.I caught The Essentials’ a cappella comedy Perfect Harmony last night at the Clurman and loved it. It’s laugh-out-loud funny, and I’m not just saying that because they’re going to be singing for us. If I hadn’t liked it, I would just have mentioned that they’re currently appearing Off-Broadway and would have left it at that.

The show is about two a cappella high school groups, one of boys (The Acafellas), the other of girls (The Ladies in Red), and their ups and downs as they prepare for national competition. Each character’s personality is well crafted, so the show isn’t just lovely singing and funny one-liners. The characters are endearing in the way the characters were in The 25th Annual Putnam County Spelling Bee.

Perfect Harmony, written by Andrew Grosso and The Essentials, premiered in the 2006 New York International Fringe Festival and was extended as part of the Fringe Encore series. You can catch it now for a limited time on Theatre Row — www.ticketcentral.com.

Then catch The Essentials again as the curtain goes up for the 12th annual Broadway Blessing, 7 p.m. Sept. 8 at the Cathedral of St. John the Divine, Amsterdam Avenue at 112th Street.