Out of the gutter.
It starts to sound really good as the song progresses. It's like one of those old computer games from the 1990's, they use the music to give off bizarre effects to the animation being played.
The rumbling could be the title of the game rolling down onto your screen as the dimmed screen becomes visible.
If you think about it, it's just like perfects for one of those old games.
Even though you say it sounds like utter shit, it's still not completely bad. I'm actually wishing it was longer myself.
Please contact me if you would like to use this in a project. We can discuss the details.