Acoustic Guitar tells the story:
Glen Campbell first heard The Lone Ranger’s brisk theme song as a kid and vowed to learn it on guitar. Not only did he do just that, Campbell made the theme—an overture from the 1829 opera William Tell, by the Italian composer Gioachino Rossini—one of his signature numbers. He revisited it throughout his career, wowing audiences by playing it with casual ease, sometimes with the guitar on top of his head. [link added - SiG]I would never describe myself as a Glen Campbell fan and never thought of him as a virtuoso guitarist. In my mind, Glenn Campbell associates with his late '60s hits: Wichita Lineman, Galveston, By The Time I Get to Phoenix, and that's about all. Maybe the stereotype of country music: "three chords and the truth". That said, I find this an amazing performance. Not just the blazing speed, but the casual, almost carelessness he plays with. Virtually all guitarists, no matter how many years they've played, spend a lot of time watching their left hand on the neck. Glenn glances there, but looks around a lot, too. He seems to be talking to people out of the view of the camera.
It brings to mind another cliche' I've heard about music in general. Practice a thing perfectly a thousand times and you play it well. Practice it a thousand times a thousand and it plays itself through you. I think the William Tell overture is playing itself through Glen.