If you were afraid of being buried alive, what would you do? Chopin solved the problem by directing that his heart be removed first, which is why you can find it, preserved in brandy, at Holy Cross Church in Warsaw; while the rest of him is buried in Père Lachaise Cemetery, Paris.
But if you believed the people around you might bury you alive because they couldn’t tell if you were dead or not, wouldn’t you be just as worried about them cutting you open to get your heart out?
I guess that’s why he was a composer, not a logistician.
That’s why I prefer cremation!