Mozart: Adagio in B Minor

[Swedes]

Have been listening to this on a compilation of FIL's favourite pieces (it's Adagio in B Minor K.540 Walter Klein) I think it's difficult listening. Horrible in fact.

Anyone?

I've never heard it I don't think. What's horrible about it?

I quite like it. It's a bit melancholy though and not one of his best.