Rhythm guitar is an instrumental role that can found in almost every popular style of music. As well, the approach to rhythm guitar playing is fairly similar across a variety of genres. For example, in bluegrass, the rhythm guitarist mostly strums big open chords on an acoustic guitar; in rock, the rhythm guitar player typically pounds out power chords; and in jazz, rhythm guitarists usually comp chords through an often complicated set of changes. In each case, the rhythm guitar part mainly functions to fill up the sonic space with purely harmonic content.

As basically harmonic filler, some may think that the particular notes played by the rhythm guitar part are not very important as long as those notes fit into the chord. The rhythm guitar’s foremost job, as its name implies, is to simply keep the rhythm. On a lot of country albums, the rhythm guitar is equalized to the point where it almost sounds like someone is playing a washboard; all the bass frequencies are rolled off and only the sound of the pick hitting the strings is what is left to cut through the mix.

The duties of the rhythm guitarist do not always have to be relegated to mere timekeeping, however. In the guitar parts of Freddie Green, for example, we can see rhythm guitar playing transcend its original function as solely a rhythmic and harmonic element. With Freddie Green, the rhythm guitar becomes an integral melodic and contrapuntal thread to the musical fabric.

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