submited by luno
Part 3: Power Chords
In order to learn power chords effectively, you'll need to really understand the names of the notes on the neck of the guitar. If you glossed over that page, you'll want to revisit it, and learn it well.
What a Power Chord Is
In some styles of music, particularly in rock and roll, it's not always necessary to play a big, full sounding chord. Often, especially on an electric guitar, it sometimes sounds best to play two or three note chords. This is when power chords come in handy.
Power chords have been popular since the birth of blues music, but when grunge music started to rise in popularity, many bands chose to use power chords almost exclusively, instead of more "traditional" chords. The power chords we are about to learn are "movable chords", meaning that, unlike the chords we've learned so far, we can move their position up or down the neck, to create different power chords.
The power chord contains only two different notes, the root note, and another note called the "fifth". For this reason, power chords are referred to as "fifth chords" (written C5 or E5, etc). The power chord does NOT contain the note which traditionally tells us whether the chord is major or minor. Thus, a power chord is neither major nor minor. It can be used in a situation where either a major or a minor chord is called for, however. Take a look at this example of a chord progression:
Cmajor - Aminor - Dminor - Gmajor
We could play the above progression with power chords, and we'd play it as follows:
C5 - A5 - D5 - G5
As you begin to play power chords, you'll note that they work well in certain circumstances (in rock music on electric guitars for example), and don't work well in others (eg. in folk songs played on acoustic guitar).
Power chords on the sixth string
Take a look
at the diagram on the left... note that you do NOT play the third, second,
and first strings. This is important, and if any of these strings ring,
the chord just won't sound very good. You'll also notice that the note
on the sixth string is circled in red. This is to denote that the note
on the sixth string is the root of the chord. This means that,
while playing the power chord, whatever note is being held down on the
sixth string is the name of the power chord. For example, if the power
chord were being played starting on the fifth fret of the sixth string,
it would be referred to as an "A power chord", since the note
on the fifth fret of the sixth string is A. If the chord were played
on the eighth fret, it would be a "C power chord". This is
why it is so important to know the names
of the notes on the sixth string of the guitar.
Power chords on the fifth string
can play the power chord on the sixth string, this one should be no trouble
at all. The shape is exactly the same, only this time, you'll need to be sure
you don't play the sixth string. Many guitarists
will overcome this problem by lightly touching the tip of their first finger
against the sixth string, deadening it so it doesn't ring.