Message #18217

[Jitendra Hydonus]

B natural with a B flat scale?

In the bluesy scale I wrote in the previous post there is no B natural, although there is a A natural which sounds good especially when resolving to Bb in the last bar.

A B natural would be the second note of Balt scale, which is an option on the Bb7 chord in the first bars of a Bb blues (or in 5th and 6th bars of a F blues)

Bb-B-Db-D-E-Gb-Ab-Bb

In strict theoretical terms, the above would be a B natural melodic minor scale

Mark Levine's Jazz theory book explains it very clearly.  Melodic minor scale harmony in Bb is played on the following chords:

Bnatural minor-major (min 7+)
Db sus b9
Dmaj#5
E7#11
B minor-major/G
Ab half diminuished
Bb7 alt

I'm not so good to remember all them, I'm reading from Levine's book.

Mccoy Saving for the last two chords... your progression has an upward momentum that culminates in the Ab half diminished and Bb7 alt.