1) Fallen Embers by Enya
This song was played during the 9/11 commemoration along with 'Only Time' and whenever I listen to it, there was a video on Youtube that this song was played at the ending, showing us the wreck of the ship in the sea.
2) Summa in Strings by Arvo Part
Although the title sounds hippy, the music is very sad and it is especially good for a funeral.
3) Song for Athene by John Taverner
We first heard this song at Princess Diana's funeral, this song will be again for those whose life have been perish, especially when Jack died.
May Ye Rest in Peace
Whenever I listen to them, especially the first choice, I cried. Enjoy listening to them!