I have been using Garageband for a while using my own guitar. I would like to use the software loops for certain songs but I can't figure out for instance how to take a guitar loop in C and record it to say C , A minor F and G in the same song without changing the key for the whole song. Is this possible? I have looked in Help and tutorials without much luck. Am I missing something simple? I would be grateful for any info for it would help in a lot of songs.