Revising a screenplay is much more frustrating than revising a song because you have to read through the entire work again while you are changing stuff. It is a lot easier to edit a song.
I see the player piano as the grandfather of the computer, the ancestor of the entire nightmare we live in, the birth of the binary world where there is no option other than yes or no and where there is no refuge.
The work of the political activist inevitably involves a certain tension between the requirement that position be taken on current issues as they arise and the desire that one's contributions will somehow survive the ravages of time.