I hope I don't get flamed for this thread... I play in an indie rock band and I want to "fatten" up certain sections (especially when our guitarist does single-note figures) by mimicing another guitar being there. I've thought about getting an upper octave of what I'm playing and sending it to a harmonizer (to add the fifth) and then sending that to another amp (guitar amp). Has anyone done anything like this? In short, I would like there to be a signal that is guitar sounding copying what I'm playing. Thanks.