Seconded! I think I'll celebrate by listening to his Passacaglia on DSCH (not now, its almost 3 am here).
One of his finest works, I think - and a landmark of 20th century piano literature. Which recording do you have? The piece has so far been played, to my knowledge by John Ogdon, Raymond Clarke, Murray McLachlan, Peter Sievewright, Mark Gasser and Jørgen Hald Nielsen as well as by the composer himself (I'm not entirely certain if that list of performers is comprehensive, but I'm sure someone will say so if not!). So far, the composer and the first three pianists mentioned above have recorded it and I've heard all of those recordings, but I've only ever heard it performed live by Mark Gasser and the composer. Top of the tree, for me - and by some distance - is the composer's superb account of it; he recorded it twice and the latter of these recordings, on the Altarus label, remains available although it was made as long ago as 1990.
Best,
Alistair