I'm listening to the weekly pipe organ music show on NPR and it's funny what feelings it brings me.
I don't have a big association between church growing up and organ music, since we certainly didn't have a pipe organ in our tiny circa 1960 church, but the sound of the organ does remind me of visits to other churches. I'm thinking particularly of large old Roman Catholic churches, austere white-steepled Episcopal churches, grey-stoned Methodist churches.
I can almost feel the still, cold pew beath me and that feeling of "Oh, yeah, the free concert is the best part of church!" (Even as a kid the thought occured to me that somebody could go to church every week, or several different churches every Sunday, or multiple times a week, just to hear free concerts!)
I think listening/singing music, examining the architecture, and listening to people all pronounce "S" at the same time ("forgive us our treSpaSSeS") are my favorite bits of church. The rest of church, when I do go a couple times a year, I often just analyze as a sociological ritual, although I do appreciate any sermon that expresses sincere non-threatening interest in helping people, loving people, and being kind (which is to me the main relevent point).