I think music tastes are constantly in a state of change but there is a ribbon of commonality that runs down the center like a highway. I will go off on a side road to see whats out there but i never stray to far from the highway. And for me that highway seems to be 12 bars. (not the kind that serve beer) :)
I always come back to the blues. And when i think about it the first music i listened to on a radio (AM) is blasting Hank Williams (Sr) and early rockabilly which is just one step away from the blues.