Although it is more common to play single note melodies on the harmonica, there are occasions when it is used as a rhythm instrument (e.g., accompanying a guitar solo). In this situation, it is important to be comfortable playing chords on the harmonica. The following example demonstrates a simple rhythm part which uses only the first three holes of the harmonica.
This example is a 12 Bar Blues. It uses the same rhythmic patterns as examples 18 and 19.