Strange Musical Moods

I am apparently in the mood for a very specific kind of music. I went online to Amazon and bought Gavin DeGraw, Jason Mraz, John Mayer and Howie Day. I know that I should be more diverse in my audio selections, but nothing else appealed to me at the time. Even now as I listen to my new purchases, I don't feel like listening to anything else. I wonder what this says about my current state of mind...