Steve, I agree that the Bnatural on the Bb7 of the first bars of the blues may not sound orthodox. In traditional blues it's a forbiddennote, whereas in jazz it is not, whereas It is good to use it after some more bluesy sound has been played. The most bluesy sounds I can now think about in Bb make up the following scale:
Bb-Db-Eb-E-F-Ab-A-Bb
It can be used with all the basic chords of the Bb blues: Bb7, Eb7, Cm7, F7
I may come up with other outside combinations, I'm going to write up a whole outside blues chorus.
Full dissonances are often played in jazz, the late Mulgrew Miller, also an SRF devotee, was an absolute Genius in using dissonances to produce an etheral sound, more suggestive of the heavens.
B natural with a B flat scale?
