I understand how it works pretty much, for example if the chord has a b7 then mixolydian would be the mode to use instead of ionian (Yes, you can use ionian, but this is too keep things simple) Even though I understand this, I can understand what people have trouble with too, because yeah... it's all just the same 7 notes. I guess you gotta just learn all the modes and then with time, the purpose will fall into place, because Heck... it's better to know them and be confused with when to use them, than not know them at all, and not even have the liberty of messing around to see what works. :cool: