Most achingly-beautiful music

It always brings tears to my eyes when my father sang to us when we were young then " One day, when we were young one wonderful morning in May; you told me you love me, one day when we were young........ Sadly missed my father who passed away 8 years ago
Michael Ko

Also, Morning Mood from Peer Gynt Suite No1, and Solvejg's Song from Suite No.2. And "Meditation" from"Thais" by Jules Massenet.
John Dean

Dvorak: New World Symphony;
Wilco: damn-near all of it

Morten Lauridsen - "O nata lux" and "O Magnum Mysterium" (choral music)

I'd say the second movement of Bruckner 7th. Or maybe the adagio of the 9th.