Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
Still worth to buy a 1st gen iPad Pro 12.9 inch
Still worth to buy a 2nd hand 1st gen iPad Pro 12.9 inch 128GB for $450 considering that you can buy a iPad 2018 128GB for the same amount of money with a better processor. Just curious what people think about the speed of the 12.9 inch 1st gen that own or have owned this tablet?