I'm wondering about his tone - it is such a pulsing, "burping" sound. I'm not talking about the chucking on Everybody dance, just the regular fingerstyle. It seems like there is very little top end to the sound, but then he does that trademark octave thing (you know the one) and you can hear brightness on the G string. I believe he played a Stingray, old strings, wasn't concerned with gear. I'm not looking to duplicate the equipment. How does he get that "burpy" sound? Is it mostly a left hand technique - clipping the notes off quickly?