The interesting thing to me about all of this is that we can all identify a distinctive sound when we hear one. For me, I can instantly feel the sound of the early to mid 70s guitar bands, and I can recall, a few years back when there was an anniversary concert for Queen Elizabeth II on the radio, that from the very first note of Brian May of Queen fame playing God save the Queen, I knew it was him. For those of us who like to listen, the sounds are unmistakeable, and take us to wonderful places when we hear them, even years later. that's the magic of music, for me.