As stated I have an iPad with the free version of Garageband. I know there are several Youtube videos, a few of which I’ve watched, but a few mention using an iRig. I’ve heard of them but in doing research I see devices starting at around $29 and some others at over $100. Where do I start? iRig2? My goal is to do some simple backing tracks that I could use to practice with and then maybe expand to backing tracks/loops for the benefit of our acoustic duo, via playback through our Mackie 808s. Thanks!