Yes, that's exactly what I mean. I usually enter midi notes by playing my midi keyboard in logic Pro, but this time no sound is coming from the keyboard. I have many other arrangements with the same template and instrumentation and the bass plays on all of them except this one. The bass track was working, but stopped. When I go into ARIA Player (third-party plugin) it I can click on the virtual keyboard with my mouse and the bass will play, but when I play my midi keyboard, nothing. Won't play.