Katharine McPhee, the "Smash" and "American Idol" star, talks about her Broadway debut in "Waitress." And David Cromer talks about acting and his acclaimed directing career, including his Tony-nominated turn at the helm of "The Band's Visit."

Watch "On Stage" on Spectrum News NY1, every Saturday and Sunday at 7:30 p.m. and 10:30 p.m.