Can you tell what you feel sad about? LIke, are you sad because of feeling like you aren't as accepted or acceptable as you want to be? Or is it associated with memories? Does the music get to you? Tears of gratitude, maybe?

I've done my share of crying in church too, and I'd say that all of the above are factors for me at one time or another. There was once when I was really upset and had been holding it in long enough to get to church, and then trying to sit there, with nothing else to do but listen and think, all of my garbage started leaking out and was uncontainable. Music opens the connection to feeling for me too, so that would have contributed. I cried really hard and had to go hide in the bathroom.