Watch the Minor Blues 18 online guitar lesson by Brad Carlton from Bluesology 2

The ii minor 7th flat5 is presented here at length. Voicings and the extensions to this chord are demonstrated throughout the fretboard. Included is a discussion of the modes used over the min 7th flat 5.
We will also explore the use of the melodic minor scale over the I minor chord. By doing so, you will hear the major 7th superimposed on the minor triad. Including these chords will introduce more chromaticism into your playing. Three note voicings will be discussed in the second segment.