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Power Chord Basics II
Using Single Notes for Smoothness
One thing about power chords is that for fast riffs, it's often cumbersome to play every note as a power chord. Sometimes, substituting a single note for a power chord can be just as effective - and a lot easier to finger.
Consider the AC/DC type example below. In measures 1-4, we use only power chords and it's a bit tricky to make the riff sound nice and fluid. Compare this with measures 5-8, where we take the same riff and insert a few well-placed single notes to make the fingering easier. This makes the riff flow a bit better, yet it still retains the feel of measures 1-4.