I'm having a lot of trouble with this particular technique, and I don't even know what it's called!
For example, Teen Spirit's progression (which I'm sure everyone knows) is:
F5 F5 F5 *chicka chicka* A#5 A#5 *chicka* G#5 G#5 G#5 *chicka chicka* C#5 C#5 *chicka* repeat ad nauseum.
For some reason I'm having an extremely difficult time finding a way that works for me to get a good sound out of those chicka chicka parts, and then get back to the power chord fingering.
So I guess the question is two-fold:
What is this technique called?
What can I do to get better at it?
Thanks guys, sorry if this is super basic stuff!