use older iPad for DAW, midi?

[BLINGMW]

I underestimated how out of touch I am with this. I figured I'd take this old iPad 2 running ios 8.3, load Garageband on it, and connect it to a MIDI keyboard and let my daughter make some cool stuff. Despite the fact Garageband used to exist for all iPads, now it seems you can only get it for ios 12, 13. Apparently had I done this a couple years ago, it would have been easy. I've already wasted quite a bit of time just to figure that out. So I'm looking into jailbreaking it via some shady ass looking websites, but then I still don't know where to get an earlier version of Garageband or how to load it. 
Anyone tried something similar?