I am curious about the techniques that recording rock and metal artists have used in their studio recordings to give their leads a thicker, fuller sound, but keeping the exact same melody. An example I know is that in a few of Metallica's old tracks, they played the same lead on two guitars at different intervals (usually a fourth apart). I have heard other techniques used that I can't figure out how it's done. An example of something I cant figure out would be The Scorpion's "No one like you" They have a multi guitar lead. Can anyone else tell me about a successful used formula that Im missing..perhaps with seperate channel delays and such. I know Randy Rhodes recorded his leads 3 separate times for the left, right, and center channels on some of his tracks. If anyone else can share their wisdom with me, thank you!