Best song for immediate impact when presenting or testing?


I, as most of you, have my regular tunes that I play or listen to when trying out a new system or playing music for friends. My current starter is 'Feels like Rain' by Aaron Neville. It engages me immediately because I love it so, but it is also very well recorded and has a bass voice doing backup which in the right system has a real visceral impact.

I was at an Audio shop recently, listening to my standards, and wanted to show the sales consultant a piece that he might not have heard. I played 'Golden Rust' off the Miles Gurtu album. After about 30 seconds, he pulled out his device and added the song to his favorites. I asked why did he add so quickly, and he said that the opening electronica had a three dimensional stereophonic quality that made a remarkable impression right off the bat. I paraphrase lightly; that was his comment.

What pieces do you play of any genre that have an immediate impact, especially for people listening to a good system for the first time?
128x128cmjones
So many so cool in different ways but my latest is Harmonix by Surfer Blood. The guitar lead is clean yet piercing and grabs your attention right on through from the start .
Andreas Vollenweider, La Strega & The Grand Ball of the Duljas opening tracks from the Book of Roses LP. If you have a good system, this will blow you away. Be sure to crank it up! (it isn't that great on YT, stream it)

https://www.youtube.com/watch?v=NdNUCcoKl8U&list=PLc8ye-UWUI_OFEdgiXKpvUfkIkOlm6D6a&index=2
Well, I fall back on a couple of old demo faves -- Stimela by Hugh Masekela and Spanish Harlem by Rebecca Pidgeon. My go-to standards for male vocal and female vocal.

Stimela by Hugh Masekela
https://www.youtube.com/watch?v=OjPrcRjN0VM

Spanish Harlem by Rebecca Pidgeon
https://www.youtube.com/watch?v=_RMTEWsGGEg