Fascinating thread, but I find choosing tracks very difficult. I'd have to skip through my impressively large TD collection to figure it out
However, the quiet pieces in Tangram Set 1 and 2 (the original and still the best version) get to me, probably because I was 14 at the time of first listen. I don't often get moved to tears by TD's music but I do feel a whole range of emotions listening to TD albums. I'm thinking of Towards the Evening Star, Cool At Heart for example.