Example...
you take the powerchord on which a riff is based:
0
0
0
2
2
0
This is an E-powerchord...
BECAUSE the root of this chord is E
so...viewing the upper (=root on the E-string) powerchords the key is always the note on the e-string. Then find the powerchord on which the riff is based...padaboom THE KEY!!!
correct?
- Vertigo