I'm weird (newsflash, I know). My mind goes a mile a minute. I, apparently, require a lot of stimulation. When I'm writing I tend to have the television on for background noise. Also, I tend to put music on to get my mojo going for the scene I'm writing. Sometimes, I'll mention that song in the scene.
This cropping up a lot in the series I'm working on right now. I felt like the songs I mention add emotion and emphasis to the scenes. Who knows what the editors who will read it later will say. They may cut it out. We shall see what the final products look like.
Anyway, if you had the opportunity, for the book you're currently reading, what would you include in the soundtrack? It could be one song or a few, or an entire album. Also, what are you reading?