In the Avantgarde room we were playing a varity of different genre's of music. I played Rachmaninoff's prelude in c-sharp minor, various vocal tracks (male and female), Beethoven's 6th, Dave Mathews and various jazz tracks. People coule request music. I played Nirvana, Rolling Stones, Toto, Daft Punk and many other non-audiophile music tracks by request. I believe a properly setup system should be able to play any type of muisc well.When I was in the PranaFidelity room at T.H.E. Show in SoCal in 2023 I could throw any music at the speakers that I wanted. I brought and played my own CDs, from Black Sabbath over piano sonatas to string quartets to jazz to challenging orchestral music (e.g., Rite of Spring) and so on. In effect, I could thoroughly test-drive the speakers. In the end I bought a pair.
I would never be a buying customer at a show demo with a fixed playlist. Exhibitors are delusional if they think they can accomplish anything that way.