This is so interesting, as today during my own meditation I found myself realising some similar things. In fact, in my meditation journal which I wrote up just about 30 seconds before reading this entry, I wrote:
"A moment can be perceived totally outside of time - a moment in itself has no need of time and can be enjoyed for the fact that it is timeless - in fact it's impossible to experience time when fully involved in one particular moment, as it were."
I also wrote about how there is such thing as being aware of a moment's context within time, but that moment doesn't depend on its context to be what it is, if that makes any kind of sense.
Anyway, it's really interesting to now read about these sorts of principles in relation to music