Originally Posted by Plankton

I've done some small gig's using just setup backing tracks on my phone that I play guitar over. Everything is input into an amp or PA. Last summer I did a few of those types of little concerts out of my garage and at a few parties for my neighbors and friends. Recently I bought a Digitech Trio that has built-in drums and bass that will duplicate any rhythm you input into it with a few chord strums, but I doubt I'd ever use that live since it's a bit random. As for the impact of those kinds of performances, it's really more of a showcase for the individual artist, and if you're going into something like that with the mindset that you only care about that artist, then it can be a meaningful experience for the listener. Buckethead and Paul Gilbert are two examples that come to mind.