Would be greatful if soundtracks names were listed

I long to know the pleasent background soundtracks in this wonderful movie. When I mention soundtracks, its not the soft metal songs which plays here and there in the movie. But it's the vocal or opera kind of music at the background. Examples: 1) Music comes right after Sarah explained her son how Louie lifted them in a massive swell, 2)A piece of music cherishing when Tom sitting in his car opens the picture of Louie from his old wallet found in the car drawn by his son when Shara was alive. 3) Music at their first visit to clinic together where they sit seperately and do crazy things.

PS: If somebody have any clue of those music pieces from the movie, please reply. Those musics are haunting me inside out. After I watched the movie, I have been humming those musics everyday. Thank you.