Isn't Pandora that station that plays songs based on previous selections? If it is, then yeah, definitely hit the album stack. Sounds like your taste is music is getting condensed.
Yes, you pick artists you like and you rate the songs you hear. Pandora then analyzes for common elements and plays other songs with the same elements to see if you like them. I was really surprised that Timron couldn't build a station he enjoyed with Pandora, but hopefully his own stash will make him happy.