I'd like to have my MIDI keyboard as input for simultaneous multiple tracks, so I can layer synths. But, as far as I can tell, the keyboard can be used as input for only one track at a time. When I switch to the second track and try to add it, the keyboard disappears as input for the first one. I've tried combos of ALT/SHIFT/CTRL/RightClick. Changing output to pure MIDI and redirecting output to other tracks still only allows me to choose one track at a time. Folder and submix tracks don't seem to work.
This should be dead simple. I'm assuming that there's a one-sentence answer here that I've overlooked.
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