‘Click, Clack, Moo’

These dairy workers need a union. But they’re not farm employees — they’re cows. Theatreworks/USA is reviving its very funny musical adaptation of Doreen Cronin’s picture book about the members of a herd who take to typing up their workplace grievances (hence the title). With a book by Billy Aronson, who’s updated the story so that the cows’ now use a laptop; music by Brad Alexander; and lyrics by Kevin del Aguila, the show is recommended for theater (and milk) fans 4 and older.