Dan

Thanks! Once you get used to the different sounds of superimposing the original chord over another, then find a way to approximate it using BIABs altered dominant chords, it becomes easier over time.

The main thing is to find uses for all the poly/compound chord voicings that suggest traditional functions of subdominant/ dominant/ mediant etc. but which can also be treated outside of functional harmony when soloing.

I also find that using the original 'vanilla' chords to a song as a starting point works better than a full arrangement full of passing chords and other substitutions.

Alan