(Suppose) I'm terminally ill with around 6 months to live.
Which piece should I learn to play, or, if my condition deteriorates to the extent that I can't perform it, which piece should I listen to and meditate on? (Limit to piano solos, piano concertos, or string chamber music, though I don't play any string instruments)
What I'm asking is, which pieces, in your opinion, have the most profound spiritual or mystical insight. The pieces shouldn't and needn't necessarily be bombastic or showy or popular.
(For instance, I'd go for something like Beethoven's piano sonata no. 32, the Hammerklavier, or his Grosse Fuge, though they are quite well-known)
(no Sorabji please)