But when you get to a song, not only do you have to do a vocal melody, you have to write words and not be redundant and make some semblance of a story.
I don't think many actors are that good, to be honest. I certainly don't think I am.
Whenever I've been stuck on a project, it's always brought me solace to the return to books that moved me in the past. It's a nice way to get outside my own head; and it brings me back to one of the most important reasons I write at all: to bring some pleasure to readers, to make them think or feel.