I don't really feel it matters what's played when I've ceased to exist but Rachmaninov's 2nd. Symphony {3rd. vovement especially} would be it. I still feel I should be writing Sibelius 2 as this was the favourite of the love of my life. She saw it as her and I climbing a mountain together .The Liebestod was one of music's great creations along with the end of Gotterdammerung, Devorak's Rusalka, etc. There were several great operas from the late 19th. century obsessed with the love through death idea - Delius's Village Rome and Juliet comes to mind. In my heyday many thought I had a great future as a Chopin interpreter. That was between my being too repressed to remove my jacket in front of my girlfriend (age about 18.) After she left me it became very different. 60 years later she's still writing to my sister saying I'm the only person she ever loved, We were certainly matched in our insanity.