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
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