by ecca » 28 Apr 2012, 07:33
I don't know of its origins, I'd never heard it done until Chet Atkins.
Artificial harmonics are as old as the hills but something was added to the process.
Firstly, pick an interesting chord, 6th add 9th or something. Generate a harmonic, say on the 6th string using thumb and first finger and then pick 2 strings up with middle or 3rd finger. Repeat this with a harmonic on the 5th string etc until you run out of strings .
Having said that, Chet does more that I haven't yet twigged, either that or he has a guitar with 29 strings. Huge cascading runs of harmonics at lightning speed.