JiMB wrote:It's the 1st and 2nd string, 17th fret, E & B notes being plucked and bent at the same time causing the scream/dissonance, the note right after is the A, 17th fret, E string on the release of the bend. Distortion helps and it sounds like there's a chorus on it. Hendrix, SRV, Albert King, many rock/blues players use that technique. Cool stuff!
I think I figured it out. I first thought of the 2 string bend but the lower note is a much lower so it's not the B string at the 17th, it's actually the G string at the 15th fret. Typically the 2 string bend sounds dissonant but also very close to the very double stops involving those 2 strings. The interval between the high e and g string is greater and thus gets that sonic howl.
So when you grab the high e string with your 3rd finger at the 15th fret you also bar the b and g strings with your first finger at the 15th fret and bend all 3 at once. Then it's your choice as to what strings you want heard. All 3, e and b or e and g strings.
I'd like to video it but I'm not sure when I'll have time.