For those reasons I take no lectures on what is inside or outside by those who believe it takes learning and education to perceive properly.

Not guilty m'lud. I'm completely self-taught in this area and don't think it requires any qualifications in any other area.

A definition that acknowledged what the music was about, how it arrived here and through what processes of mediation and consumption would be more honest and relevant

The 54 definition is precisely about "how the music arrived here and through what processes of mediation and consumption" - that's what it defines. As Spleen said many moons ago, it essentially defines a type of process rather than music (just as Suibhne's DFC defines a type of event rather than music, and what it says on CD racks defines a type of branding rather than music). But it also enables us to distinguish the music that's been through that process from music that hasn't - I guess you could say it's a way of identifying music rather than defining it.