Are you sure that enka is what he wants? I love it and have several albums, but for a slide show and 'traditional' music, I might opt for something like koto/shakuhachi music.

Do you do Usenet? I've downloaded several enka singles and albums and a smattering of j-pop from alt.binaries.sounds.jpop. I might even be willing to post some if I knew you were going to get it.

Failing that, a quick search of Amazon.com will get you a lot of both, albeit not for free.

JR