Is this supposed to happen with a version of the end? (SPOILERS)

Okay, so I just pulled the warp core, thought I was close to the Sun going supernova and meditated because I thought I could just come back but I did not think of the fact that… yknow, no Ash Twin Project.

Anyways, credits rolled, I get to the title screen and there’s no music. I thought “oh man that’s such a cool addition”

But now even back in my save there is NO audio at all. Is this normal?