WHAT PATTEN DO YOU USE TO PLAY A GOSPEL RUN IN EVERY KEY?WHAT SHOULD I BE PLAYING ON MY RIGHT HAND WHILE MY LEFT HAND IS PLAYING THE GOSPEL RUN?
Runs are based off of Scales.
I recommend you purchase a book of Scales and Practice, Practice, Practice.
I'd suggest you do the runs with you RIGHT HAND as opposed to your left.
As for what chord you play, that depends on what scale you're playing.
If you're running an Ab Blues scale, you should play an Ab Major or B Major Chord. (B Major because Ab is the relative minor of B Major)