Well, OK then. I did get a chance to play a quick pass through it on my nylon. I know, nylon string guitars aren't exactly made for funk, but I still don't have a nice electric set up for anything but
slide.
I just thought 'A13' ... that took care of any and all extensions. I was basically looking for lines in A7, A9, G/A and Em chord tones -- that's how my brain works -- using the chromatic scale to link ideas up always remembering that 'A' is home. Mostly though, I was zoned right in on the melody line(s) I was creating, making them go where I wanted them to go.