The ones I would check out are the Production and engineering one by Mitch Benhof, and all of the ones in the songwriting section by Pat Pattison. They were, by far, the two best teachers I had while I was there. Pat was easily one of the best teachers I have EVER had. There is something to be said about going into a teachers class every day and walking out going, "Wow, I never knew that!"
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"Cowards can never be moral."
M.K. Gandhi