Not creepy at all - nothing wrong with a bit of "brother, remember your death" from time to time. Considering details like this ahead of the fact will save no small amount of grief (literally) later.
Here are the two I have settled on so far:
When It's All Been Said and Done (Lyrics in video)
Lord of all Hopefulness. (Lyrics are in the expanded description; click on it to expand.)
Not Amazing Grace. Sorry, but no. Maybe the song 'I Call You to My Father's House', set to the same melody, that was sung at my mother's funeral.
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For men are homesick in their homes,
And strangers under the sun,
And they lay their heads in a foreign land
Whenever the day is done."