12 Bar Blues is a chord progression which repeats every 12 bars. There are hundreds of well known songs based on this chord progression, i.e., they contain basically the same chords in the same order.
12 Bar Blues is common in many styles of music including Blues, Rock, Jazz, Country, Soul and Funk. Some well known songs which use this 12 bar chord progression are:
The following 12 Bar Blues is in the key of G major and uses all of the chords you have learned so far.
Instead of writing a chord symbol above each bar of music, it is common to write a symbol only when the chord changes, e.g., the first four bars of this Blues are all G7 chords. Once you can play this 12 Bar Blues, use the chords to accompany the next exercise, 2 String Blues.