GEOFF AIN'T NO EDDIE KHAN, you do not always need fancy substitutions and reharmonizations to bring new life into a tune. And this is without to say, that in many many gigs you will have to play the changes everyone else is using (like at a Jam session). Then what do you do? Johnny Hodges never played a substitute chord ever. Did he need to? he always played GORGEOUS. It's easy to fake depth through technical complexity. It's mighty hard to play something deep with few notes. Do you get what I'm trying to say? if not, figure it out alone, it will help you. Bottom line: How does it sound????