I'm a beginner in music but play with some quite experienced musicians. None of them are vocalists but one owns a Peavey RX 684 PA system. We only cover songs, mostly classic rock. It has 16 preset effects. I'm wishing for something like a "song mixers guide" that would indicate which pre-set would best help our live vocals replicate the original sound effect from the orginal bands vocals. Example; we cover Sweet Emotion by Aerosmith. It would be great to have some document that said "set PA to preset #4, Cathedral, for Sweet Emotion", set PA to preset # 15, Flange, for Jumping Jack Flash (The Rolling Stones), and such. So, after you stop laughing at my novice question, tell me, is there some such guide for PA effects?