im a guitar player but not that knowledgable on chord/music theory and i noticed that pete townshend usually adds extra notes onto his power chords (i.e. his A5 is like x02255 D5 is like xx0235) and i was curious as to how he was able to know that he could add those notes and get such a great sound....how do i add notes to chords?
Those are just octaves of the root or fifth, but they'd be hard to play if they werent in open position. They're just stacked power chords, I guess.
Those "added" notes are in fact not different notes at all. They're notes that belong in the chord just played in a different place. However, Pete is famous for his use of sus4 and sus2 chords. For example: Asus4 x02230
hes just stacking the octaves on top to produce a fuller sound.