“Harmony” Fails to Sing Along With Its Source Material

Theater-goers who saw “Harmony” at the National Yiddish Theatre Folksbiene expect to see roughly the same show at the Ethel Barrymore Theatre, where it opened on Nov. 13. Barry Manilow fans might expect a jukebox musical with his familiar tunes, which — spoiler alert — it is not. But for most, this is a new show with a title that does not give too much away.