[quote name='bigjohn' post='702991' date='Jan 6 2010, 03:53 PM']I argue with my girlfriend (grade 8 theory) that it's possible to play any note with any chord and make it sound harmonious. She argues till she's blue in the face that you can't - despite me repeatedly asking her to pick any note / chord, watch me play a run or melody which includes said incongruous note over that chord, and then tell me it sounds out of key when it doesn't.
But then, she don't know the blues [/quote]
The problem is that she doesn't know [i]enough[/i] theory. If she doesn't know the blues, then that's a HUGE gap.