Yeah, Grant could definitely travel 100 mph in the slow lane. I’ve only found one video of him ever. It’s him playing with Kessel & Burrell on a legends of jazz DVD
Another amazing guitarist is Pat Martino. If you don’t know about him he was the house guitarist in a famous jazz club in NYC. There’s a great video of George Benson talking about the first time he heard Martiono
The amazing thing about Martino is he had a brain aneurysm which resulted him loosing a portion of his memory…and part of that was how to play guitar. He had to reteach himself how to play and I think he’s as good if not better then he ever was.
Here’s a video of Pat Martino playing Sunny with Scofield. Scofield even stops playing to watch. That’s not a bad camera, just his speed blurring it out! Man, talk about using the whole fret board and all the strings!
He’s got a bunch of instructional DVD’s out there some of which are on YouTube, but he’s is so advanced & fast that when he explains & demonstrates I’m like, “WHAT!?”