Thanks for playing!
You're right, it's essentially a single linear path. Generally I like player choice, but decided on that early on to keep things simple to limit scope and preserve my own sanity. It is more of an illusion of choice- kinda a Fallout 4 ish "yes, yes, sarcastic yes, no but actually yes" dialogue tree. I put a few of those choices in to give the game a bit of interactivity, and it does sometimes affect the next line/response.
The music selection was done in a hurry this time. I think it generally turned out pretty well, though there are a few parts I'm not totally happy with.