The Locrian mode is one of the most sonically challenging sounds in music. And ... over the m7b5 chord (the ii chord) in a minor ii-V-i progression in jazz – so there's plenty to be gained ...
If we took an Em-A7-D (II-V-I) progression and decided to jazz it up with 7ths and extensions, we might well start with this Em9 chord. The F# (9th) is our highest note. I mention this because the ...