#1
hello this is a famous thing we see...i dont know its name i just call it 2 strings pick

e|-----------------------------------------------------|
B|--17-13-10--16-13-10--9-12-17--9---12-17--18--15--12-|
G|-----------------------------------------------------|
D|--14-10-7---13-10-7---6-9--14--6---9--14--15--12--9---
A|-----------------------------------------------------|
E|-----------------------------------------------------|

usually i just use my pic for the upper string and my ring finger for the other string, but in this tab u have to pick it as fast as u can, like tremelo pickin, sooo how can you do that?
and also if u know the name for this shape or technique please tell me for later referance, thanks
METAAALLLIIICCAAAA
#3
theyre called octaves.
and the way i do it, is i fret the one note with my index, and the othe wiht my pinky, and mute the string inbetween using my ring or middle finger.
#4
Quote by FretboardToAsh
well, they're powerchords so I would just play jam downstrummed fast

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#5
Mute the middle string so you can play both notes in one strum.

It's an octave interval/octave powerchord.