Yes, I should have been more descriptive, more clear.
Maybe in the purest sense, the definition of musicality can't be "owned" by one individual. Nevertheless, I believe that there are aspects of describing how music sounds when played back that need to be present for many people to say that the sound is musical (for them)...examples might be the tone, the dynamics, the flow, the lack of harshness...but for any individual, that combination of characteristics that makes something musical is personal (to them).
And yes, maybe there are numerous psycho acoustic things, some of which are known and identified that also need to be taken into consideration if an "overall" definition were to be agreed upon.
I suspect this subject should be very important for an equipment designer, the more of these characteristics they can identify...and then make sure are present in their equipment, the more appeal they will have to a larger group of potential buyers.