Broadway star Laura Osnes, who was in Bandstand there, stars in a series of concerts under the title "Broadway Princess Party," in which actresses sing all those songs about how rough you have it when you're royalty. Here she is singing "My Own Little Corner" from Cinderella, after which she is joined on stage by Corey Cott and Jeremy Jordan to perform Mr. Sondheim's song "Agony" from Into the Woods. You'll like this…