Thanks for this!! I'm definitely going to work on this technique.You understand how a natural harmonic works? Like, doing a harmonic on the 12th fret with the open string?
It's the same principle, except he's causing a harmonic on the same note an octave higher.
Usually you have to do index+thumb to pluck the harmonic as you fret the note 12 frets lower.
You can do it with chords and it's really nice...