At first glance, I thought higher on the Y-axis (even though there isn't one) was more words. I was frantically hovering looking for Aesop Rock until I realized how the grid worked. Sure enough.
That's what I put on when I want to listen. It's like watching a movie, I don't want to work or exercise to it, it demands all my attention. On the other hand, nothing hypes me up like a DMX track.