I'm enjoying this thread

. Please don't stop.
I have an old LP of the Planets that I haven't played in ages. It might be that same recording.
Another French horn recording I've used to test speakers is Aaron Copeland's Fanfare for the Common Man. It's the Telarc CD of the Atlanta Symphony.
You're smiling about this, but this can also be seen as the manipulative marketing part of audio that I and others am so unhappy with.
We've been on B&W's case with regard to their trademark Kevlar drivers, but they clearly know a thing or two about marketing. In a store with many different speakers competing for customers, they know that those highly visible amber drivers look different than the usual run of the mill speakers with boring black drivers.
And they certainly sound different too. Compared to something like Bose cube speakers, they stand out. Many customers have been seduced by their "etched" sound in the store, only to find later learn they can't listen without suffering from the dreaded listener's fatigue.
But the problem remains that these people did buy what they thought sounded best at the time they were buying.