Tracks worth for a 1 Million system

Hi,

What people would play on an ultra high end systems?
Which tracks really justify to be played on such iconic concepts?

I could imagine piano concerts as one. 

Which track would you play if you had a "one opportunity" to make these myths (i.e. ultra high end speakers) come alive. 

There is no best here, there is no one to rule them all. Such music could come from a very rare genre or instrument. 
"... regardless of speaker/system/cable/room/region matching.." 

Let us hear what the world says.