I think this song is a about a quandry that Liz was caught in. On the one hand she wanted to remain true to the indy world that made her what she is but she is also tempted to "cash in" on what made her succesful by creating songs that are catchy for a mainstream audience and getting paid well for it. "Take the train on up to the zoo" must be a metaphor for having a bigger audience and not caring what the indy scene is saying about her.
I think this song is a about a quandry that Liz was caught in. On the one hand she wanted to remain true to the indy world that made her what she is but she is also tempted to "cash in" on what made her succesful by creating songs that are catchy for a mainstream audience and getting paid well for it. "Take the train on up to the zoo" must be a metaphor for having a bigger audience and not caring what the indy scene is saying about her.