Part 3: More about Tension and Release
NOTE Learning how to play over ii-V-I's can be a huge asset to anyone's playing. And it helps you understand tension and release better than almost any other common music form. For a full-blown lesson on V-I's and ii-V-I's look here:
http://mikedodge.freeforums.org/ii-v-i- ... 233e54c490
I think the Diminished scale used in Blues, or Jazz Blues is first evident by learning a specific Blues progression and seeing the V-I's, and the ii-V-I's and how to develop substitutions and Chromatic connections.
Before we go all crazy, lets see the Diminished scales use in a V-I, or ii-V-I if you will:
||: Em7 | A7 | Dmaj7 | Dmaj7 :||
Since the A7 is the V7 here you can use a W-H scale from the b7(G W-H), the b9(Bb W-H), the M3(C# W-H), or the 5(E W-H) of the A7 chord.
I find for beginners that starting out with the one from the b9 (or the Bb W-H) helps them with "the sound" quicker...mainly because starting from the M3, 5, or b7 still keeps their ears glued to that Mixolydian sound. But, starting on the odd or outside b9 makes a strong statement right on the first note that this isn't Mixolydian anymore. It's good for them to approach it this way for a bit until they learn how to make a strong "out statement" using inside notes (M3, 5, and b7).
The Bb W-H scale would be: Bb C Db Eb E F# G A Bb
You can play it here:
A7
E-----------------------------------
B------------------------8--10--11--
G--------------8--9--11-------------
D---8--10--11-----------------------
A-----------------------------------
E-----------------------------------
When you play over the V7(A7), definitely try starting your lines on the Bb note. You can think of this as "playing a W-H scale a half-step above the Root of a dom7 chord".
Remember when I said that the Diminished Scale contains FOUR dom7 chords? When you see that V7 chord, think of it as four dom7 chords a m3rd apart. So think of it as A7, C7, Eb7, and F#7.
So, if you use the "playing a W-H scale a half-step above the Root of a dom7 chord", you now have FOUR Diminished Scale you can use too: Bb W-H, Db W-H, E W-H, and G W-H!!!! Sure, they all contain the same notes, but now you can apply them from four different aspects, or "launching pads" if you will.
And if you decipher the W-H scales from each of their M3, 5, b7, and b9 you will find yourself creating new lines in areas you may have not been before. Some will start on notes that fall in A Mixolydian, and some won't. It'll start opening up different "views" and a more complete sound for you.
Also, never forget that a diminished scale not only has four Dominant chords a m3rd apart but also has four m7 chords a m3rd apart, and four m7b5 chords a m3rd apart. So, now you can get some diminished sounds using nothing but dom7, m7, and m7b5 arps!