To the best of my understanding, it's this: A play can be about music, but a musical creates a world through music. The task of the lyricist and composer in a musical are unique, and quite different from that of a playwright writing about music or musicians.
Lady Day is a play that is about songs sung in the real world and the person who sang them. (Master Class is another example that comes to mind.) If one wrote a play about Beethoven and included the Moonlight Sonata, it would still be a play.
In contrast, Hedwig's songs create a world in and through the music and lyrics, in which an imaginary artist's story is being told. The fact that the character is the artist singing them doesn't change what the lyricist and composer had to do to create a world and story through music.
Updated On: 6/8/14 at 11:03 AM