I wouldn't be surprised to find a lot of indie rock on Cloud's iPod like The National or Death Cab for Cutie before they became really, really famous. Not that they aren't good now, but they're old stuff sounds more like Cloud. Some, not all, but some of The Shins.

I bet he listened to a lot of Tool right after Nibelhiem gets sacked and any other time he feels pissed.

I think Cloud would be cultured enough to actually listen to music though and since whatever it is that bands like Nickelback and Linkin Park produce can hardly be considered music, we're not likely to find such bands on his iPod.