I'm considering a purchase of a regular pod xt, but I have a few questions about the capabilities of the pod. I'd like to use it with my bass and my electric guitar, mostly as a travel/practice tool, but also as a performance tool. I've gone as far as borrowing a friend's pod xt to see if I like it before buying one. Can anyone recommend settings that emulate a classical guitar, acoustic guitar, upright bass, or that zither sound in the movie "The Third Man". Does the pod xt have pitch shifting capabilities? I don't see that listed in the table of contents in the manual.