Music isn't really dying, it's more that big industries kinda don't care much for originality. Although, I think it's a bit of a stretch to say it's dying
Depends on the song. If it's a loud rock song, I'd probably think of an epic battle between rivals. If it's soft piano music, I'd usually think much gentler things like lovers on a beach or something
I've always liked water types. I always choose the water starter because I believe they have less weaknesses than fire and grass, unless I'm mistaken. And I always find it fun to use Surf on the water
Personally, I like villains who believe they're doing good. Like Frollo in Hunchback of Notre Dame. He believes he's doing the will of God rather than just being ambiguously evil, which makes his motives more interesting