Disco = Today's HipHop & Rap?
Nahh, when I'm out fishing in the suds, I'm usually humming some Pink Floyd. You'd be amazed how "Wish you were here", Comfortably Numb" and "Welcome to the Machine" can tune the brain in to prepare for a hit (of Fish, come on now!)
3rd Album I ever bought was The Cars, right after paper route saved up enpough for a turntable...
Other good places:
Harpers Ferry
Play it again Sams
The Silly (tough for music though)
Grat Scotts (but a bit newer)