Well calling Apache a pop song doesn't do it for me at all. There must be thousands of sixties pop songs that are so forgettable that I've forgotten them all. But I can honestly say that if you say "Shads Apache" it triggers an immediate pleasurable earworm in me, and I can equally honestly say that it's been like that with me for about sixty years. Certain tracks are seminal, iconic, or whatever other tiredly pretentious words one could apply, and Apache is right up there. I'll make a list of some others some time. That'll cause a fight...