What scales are good to play walking bass over a 7+9 chord? I'm a little confused about this - while I've been playing, the major/minor scale or Hindu scale works well over this 7+9 (it's the 5th mode of the melodic minor mode). In Aebersold, the scale choice on the Scale Syllabus (middle page of 'How to play jazz') says to use this Hindu scale for a 7b6 chord. On the 7+9 it suggests Diminished whole tone. Could it be that this is a very rudimentary list? Does anybody have any links to a more complete list of scale/chord combinations? I would like to look at each chord thoroughly and explore lots of different avenues.