Another important sound used in Blues is the dominant 7th arpeggio. Its degrees are 1, 3, 5 and b7. Shown below are the five forms of a C7 arpeggio.
Here are the fingerings for the five basic forms of the dominant 7th arpeggio.
The following examples make use of dominant 7th arpeggios in various forms, along with the scales from the previous sections. The first one works over the last four measures of a Blues in C.
Here’s one using a D7 arpeggio. The 16th notes in this lick are swung.
Here is another funky riff which works over an A7 chord.
This one works over the last four measures of a slow Blues in Bb.