My mind has a constant rhythm. Its layered at two levels.
One being a sound and the other a thought - like most people do.
Now, the thought occupies the little time. If it does its always about what next and the how to.
The sound on the other hand is all about a track, a beat, a loop or a ambiance in the distant setting from a video I may have seen sometime. What is engaging is that it always plays in the back of my head. Like walking into a room with imaginary headphones on and the speech of people is always smothered by the sounds that are far more attractive.
I also keep a track of what I listen to in the form of a play list. I am sure you must give it a try.
Its good to live in a world of your own - the one outside is far too less crazy.