the fretting hand's technique, borrowed by the right
howHammer a picking-hand finger onto a high fret, pull it OFF sideways to sound the note below, which was already fretted — a three-note loop from two hands. Mute unused strings with the fretting hand's free fingers religiously.
musically, it's forArpeggios wider than any stretch, cascading intervals, the 80s in one move. Musically it's just legato with a longer reach.