That Highway Star video is a perfect example of how the original artist can't duplicate his signature guitar solo live. It's still a great performance, but it just ain't what it was - unless you're there at the concert and high as a kite.
Great performances defy analysis. And are too-quickly taken for granted, if your thread and the replies thereto are any indication.
Greatness, regardless of its component origins (performer, producer, engineer, session dude, etc.) should never be taken for granted. That it is, is truly a shame.
