I don't know if anybody else has done this (if they have, I haven't seen it around, so let's just start it up again). What's your favorite Pokémon music? It can be a fan song, the games, the anime, whatever. My favorite is To Faunz/Forina from the Jirachi movie. I mean, just listen to those trumpets!
I honestly like the Elite four champion music from Pokémon Silver, you know the one that plays while you`re fighting Lance.
The Mystery Dungeon games always have the best music. Here's one of my favorites. Spoiler: Minor Super Mystery Dungeon spoilers?
Anime OST (disregarding OP's and Endings) are often underappreciated. Seriously, listen at this I love the original ost, it is so damn well done.