We continue our journey into the life and work of Stephen Sondheim, the composer and lyricist of some of the most well-regarded musical theatre ever made.We are joined by performer Philip Quast, authors Joanne Gordon and Robert L McLaughlin, directors of several Sondheim productions Dean Bryant and Sonya Suares, and we speak with the New York Times' chief theatre critic Jesse Green about Here We Are, Sondheim's posthumous final musical.