One of my favorite scales to use over a dominant chord is the half-whole diminished. The symmetrical nature of this scale really lends itself to block chords. (half-step, whole step, half, whole, etc.). The tensions that we get over a dominant chord are the flat-9, sharp-9, and sharp-11. This was also one of Wes Montgomery’s favorite. He would sometimes harmonize an entire dominant 7 line with the same diminished voicing. Not only does this technique sound great, it is also very easy to utilize and to integrate into your playing. We like that.
Some short movie clips of the examples
Here is a short movie clip of me playing the examples below.
The Raw Material
Video Example 1: Half-Whole Diminished on High Strings
Half-Whole Diminished on Middle Strings
Half-Whole Diminished on Low Strings
Some 5 chord(Dom.7) to 1 Chord (Major 7) Lines
Here are a few examples of some 5 to 1 chord passages. Be sure to make some of your own lines. Try to use these ideas in other chord progressions and other keys. It is your job to create you own material.