Only two tracks to test your system, forever!

My current two, mostly based on frequency of usage for testing, are:

1) Diana Krall - Sway [96/24], Qobuz

2) Nik Bärtsch - Modul 12 [48/24], Qobuz

(Try to ignore the unrealistic aspects of this question that accompany the hypothetical nature of the proposition)

Both vinyl…

1. Porcupine Tree Harridan or Herd Culling

2. Anything Peter Gabriel

3. Bonus tracks: Roxy Music Avalon, Bryan Ferry Beté Noir

Babylon Sisters - Steely Dan

Fire and Rain - James Taylor

And a Female Singer, Amber Rubarth, Aimee Mann, Lindi Ortega, Brandi Carlile

I use the first two when I want to impress someone (older)  who doesn't understand what really good audio sounds like. I have yet to find a song that impresses someone under the age of 25 (unless they play or sing themselves), all they ever say is, "Well, it's louder...."

Tamp 'em up solid - Ry Cooder

Help Me - Joni Mitchell