For more than five decades, composer and lyricist "Stephen Schwartz" has shaped the sound of American musical theater"from the early impact of "Godspell" and "Pippin" to the global phenomenon of "Wicked," and beyond. On this episode of "Theater: All the Moving Parts," Patrick Pacheco is joined by Ruthie Fierberg, Executive Editor of "Broadway News"; Matt Koplik, host of the podcast "Broadway Breakdown"; and Juan Ra…