I think the Yanni/Laurel thing, as silly as it may have been, taught us that many of us hear differently from others.
I don’t think that is true. I experimented with different speakers and headphones and am now certain that the biggest factor in hearing Yanni or Laurel is the fidelity of the device you are listening on. The result is based on frequency response. I’m betting that 99% of people would hear the same thing if they listened to the same sound reproduction device.
It actually is a teachable moment for audiophiles, but it teaches something about reality not subjectivity.