Perfect Harmony has “an abundance of heart. This likable music-filled comedy, by Andrew Grosso and the Essentials, features rival high-school a-cappella groups, the Acafellas and the Ladies in Red, who, in the course of preparing for nationals, train, freak out, stop speaking, and overcome their differences—and that’s just within the teams themselves. Written and performed with an acute understanding of the anxieties and quirks of young achievers, the show derives much of its charm from the strange, horrible magic of the a-cappella genre: the exacting deployment of pitch, harmony, and musical arrangement joined with irony, pop culture, and earnestness. The singing and acting are strong, and the song choices hilarious.”

The New Yorker, July 28, 2008