Long time lurker here wanting to see if anyone has some thoughts on this. You guys always have some awesome ideas and conversations in this forum so I figured I'd pick your brains. When using Garageband for keyboard typing I've always thought it was annoying that you could only really type one octave at a time. I was wondering if there's anyway to plug in a second usb keyboard and trick the computer into thinking it was a midi keyboard and modifying it to be able to produce two octaves. Ultimately you'd be using the keyboard something like the crude drawing I made. The main reason I'm asking is because I have a bunch of old USB keyboards that would be great for this but I don't have any Midi Keyboards.