[Harp-L] II V I

["John F. Potts" <hvyj@xxxxxxx>]

Jerome,

You posted the following:

Concerning the possibility of playing a note on a chord, I don't  
think about
the problem the same way. The problem, according to me, is not which  
note
you can play, but which scales. You can perfectly play a substitution  
of the
current scale, with notes which seem to be relatively far from the  
original
chord.


I am very intrigued by the concept of "scale substitutions.''  Is  
there a reference or a formula for determining which scales can be  
"substituted" for use over which chords?  Or can you at least  
elaborate upon how this determination is made?

Thanks,

JP