Bb7
The root 5 dominant 7th bar chord can be formed from the root 5 major shape by adding the little finger, as shown in the photograph. It is a bar chord extension of the open A7 chord. Play the new shape up and down the fretboard, naming each chord as you do so.
Rhythm Pattern
Bb7
* A common alternative fingering for this chord shape is an extension of the open alternative A7 chord given in Lesson 10.