My dad is putting his photos of Japan into a computer slide show, but he was hoping for a decent soundtrack to go with it.

My collection ranges from Pizzicato 5 to The Boredomes and is a bit too 'up-tempo' for him, Geinoh Yamashirogumi is too weird.
I'm pretty sure he's after Enka or something similar (I'm completely ignorant on this front).
Does anybody know of anywhere I an get some songs that are in the public domain for download. I found a couple, but they're meant to be played on-line only and won't allow you to save them.

Or recommendations that I can purchase myself in Japan next month would also be appreciated.