But rhythm guitars are not just chords and arpeggios Another common type of cheap guitars performance involves the use of power chords, especially in rock music. The power chord is basically a double note containing only the root note and a perfect fifth chord. Sometimes an octave is added to make it fatter, and there are variations, such as reducing or increasing the fifth octave. Power chords typically experience some degree of distortion and usually move over the neck in very fast order. It's best to use the downstroke and palm mute to play the power chords to keep it sounding tight. Anyone who learns how to play an cheap electric guitars should spend time on the metronome to practice power chords cleanly and rhythmically.