It’s using a blogging tool called TextPattern, which I’d never used before, but I like it a lot more than WordPress. Feels really simple, gotta get your hands in and customise it, nice and DIY. More work (and the reason I took so long to mention it is that I wanted to get it setup right), but not to hard to tailor it to what you want to use it for.
I’ve been thinking about tying it to a wiki—either its own or my regular one—so artists and songs would have pages with bits of other info.—or even making it entirely wiki-based. But happy enough with it as it is now.