QUOTE (Porthos1 @ Mar 1 2008, 12:30 PM)

How about this, music written and recorded or performed in certain key signature ABSOLUTELY have an effect on the listener. To check this out in person, go to church, then go to say an AC/DC concert. There is a hugely noticeable difference in reaction. Same goes with the drum. You can kind of control some part of the mood with the right music choices. Listen to Mozarts Ave Maria, in my opinion it is one of the most beautiful things I have ever heard.
What I have always wondered, is why so many of the hymns are written over stolen works of music. I mean, there have been a lot of old melodies misappropriated by hymn writers. This begs the question, If the hymn writer was so inspired by God, why didn't he write his own score and not pilfer it from someone else's hard work?
Comparing ACDC and church hymns doesn't say anything at all about certain keys affecting people in certain ways. Both ACDC and the church [at least the catholic church I went to in my youth] primarily use/used keys like C, G, D, E minor, A minor...the church probably used Bb also, but the point still stands. ACDC and a catholic church sound different because of drastically different styles, instruments, and performers.
However, if you transpose a melody or chord progression that was originally in one key into another very different key [C transposed to Db or F# will work very nicely], you can often hear a very drastic difference in texture. The blues is a good example. Hendrix's "Red House" and Thelonius Monk's "Blue Monk" are both slow blues, both using basic I-IV-V changes [Monk usually didn't use the ridiculous blues substitutions that we jazz musicians love so much], but yet they sound completely different. One is in B, the other is in Bb.
But that's not even on topic.
As Lt_Ripley stated, nearly any music, religious or not, can have a hypnotic or trance-inducing texture. If you ever have a chance to listen to an African drum ensemble, by all means do so. And when you're listening, sit quietly, shut your eyes, feel the music and forget everything else. You'll be in a trance before you had any idea what happened. Free jazz is the same way. In most ways, the two are incredibly different, but both require an incredible amount of energy on the part of the performers, and both often have spiritual inclinations.
...Sorry guys...It's a thread discussing music. I got excited.