Off the top of my head there's two songs that immediately pop up as two of the only songs I've ever cried to more than once, there's probably more than two in total but these are the most memorable ones. The one about Allende is particularly touching because I'm chilean, if you don't speak spanish it probably won't hit as hard but you can tell the feel of the song either way. Can't embed more than one link so the second song is Ohne Dich by Rammstein btw
https://www.youtube.com/watch?v=LIPc1cfS-oQ&ab