Little Details

About twenty years ago, my piano teacher said that she'd read that Bach assigned a different mood to each key, and that correlation helped him determine the key of each composition. The one I remember was that D-major stood for joy.

I've Googled and researched and kept an eye open since she mentioned this, and I've found no text that backs up her claim. Does anyone know where I could look, or (better yet) have evidence for her claim?

Thanks!

Settings: Late 2007 or late 2008 NYC

Search attempts: Google, Wiki, Setlistfm, lastfm, youtube.

What: I want everything as authentic as possible so I'm back here, again. What I'm looking for is a concert that took place at the end of November 2007 or 2008 or early December 2007 or 2008. I've kept the timeline of the story vague so either year will work. I know Oasis was at Madison Square Garden December 17 2008, but I was hoping for a late November or early December concert. Band doesn't have to be a huge or popular band, but I'd like the music genre to stay in rock/pop, alternative rock, or indie rock with some dancing and singing along because there should be drinking and smoking pot at this particular concert. Or any other suggestions other than a club where drinking and smoking pot can happen, I'll take. Thanks.