My dad had a version of Clinton's Gran's: Sing at the table, die in the workhouse (he could be quite miserable, by dad...)
Then there's the song The Silver Swan (which, living, hath no note. When Death approached unlocked her silent throat, etc.)
And the most well known in Welsh is, "Can di bennill mwyn i'th nain, Ac fe gan dy nain i tithau." (Sing a gentle verse to your Granny, and your Granny will sing back to you) Sort of ... one good turn deserves another.