Yes, as can I. I also plugged in my Axiom KB and it works fine. I'm trying to play via an app on my ipad called Chordion over a network session that I established within the Mac's midi studio (audio midi setup). I just don't understand why if the midi signal is reaching the track, no sound or recording is produced. This is the case for any track I attempt to record additional sections to, and also any new tracks within this project, but playing from the app works fine in a new project.