alt Hacker NewsNice article for engineers to understand something that most guitar players will intuitively know.
One of the great things about a hi-gain setup like Hendrix's is how the feedback loop will inject an element of controlled chaos into the sound. It allows for emergent fluctuations in timbre that Hendrix can wrangle, but never fully control. It's the squealing, chaotic element in something like his 'Star Spangled Banner'. It's a positive feedback loop that can run away from the player and create all kinds of unexpected elements.
The art of Hendrix's playing, then, is partly in how he harnessed that sound and integrated it into his voice. And of course, he's a force of nature when he does so.
A great place to hear artful feedback would be the intro to Prince's 'Computer Blue'. It's the squealing "birdsong" at the beginning and ending of the record. You can hear it particularly well if you search for 'Computer Blue - Hallway Speech Version' with the extended intro.
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The first time I had an amp distorted and loud enough to cause feedback (if I wanted to) at band practice was the most magical day of my life.
I had heard it a lot in punk and pop-punk to create swells. I improvised my still-favorite solo that day.
I think I recall reading about Hendrix that he tried to emulate the sounds of cartoons with his guitar, and then when he was in the army he did the same with trying to reproduce the sounds of fighter jets. Not sure if urban legend, but cool origin story.
Star Spangled Banner was incredible. The way you can hear the machine guns, choppers, sirens, screaming in agony… that was a masterpiece.