I’ve been a composer for 40 years. There’s no emotional “formula” to tug a person’s heart with. But I can tell you this of my experience in that regard as a composer; that there are pieces that I’ve written that just seem to do that. And at this point some of those pieces have been performed somewhat consistantly for up to 20 years! It’s a terrific question. One I’ve thought often of. No doubt there’s a lot that has to do with culture. In our case, western music. But aside from that, I don’t know. I wish I could give you a better answer!!