Sabai, I stumbled unto this thread only now unfortunately, being intreaged about your use of magnets on a new thread of yours.
To my mind a system is felt to be musical, if it allows a listener to be deeply touched by what he hears. A system, which lets "the soul of the music" come through. A musical person is generally also a music lover and not necessarily just an audiophile. The two do not always and at all occasion necessarily coincide and this fact makes the definition of musicality difficult in our context here. A system itself can never be musical. It is just a collection of machines. Nor can the software, we feed our machines with be musical. It is rather in the interplay of software, machine and ear that we deem one system musical and another not.
I find the fact interesting, that even with a system which we on one day experience as musical, on another day with the same music playing we find as sounding awful. So there is more to it, than just "ear".
The high end industry strives in part due to the fact, that we often enough question our systems. Is it really as good as we think? Shouldn't we rather get product B, because our product A does somehow not keep its promise? And so on and on ad nauseam. Compare that to our going to a live concert. Unless we sit in a really lousy seat, would we ever criticize the sound as unmusical? The interpretation of a given piece, yes of course, but the sound itself? Hardly, I would contend, unless again, we are seated in an acoustical unfortunate place. So, live music, even if it is perhaps not pleasing to us, IS by definition musical. And hence I am thinking, that perhaps the late Harry Pearson was right, when he tried - at least in his beginnings - to judge systems in comparing them to what he called "the absolute sound", namely that of live music. And yes, to be a good critic of how a given system sounds, you must necessarily be a "musical person" who, if he is a music lover, would also enjoy music from whatever source it comes from. If the source is more important than the music, I would call that person an audiophile, a sound lover, translated, but not a true lover of music. Just my two cents.....