> Forget about the names, you are not conrolling a General MIDI device > but individual pieces of software, plugins. Select the track where > your plugin sits. Open the plugin window. Now open the Controller > Assignments and enable the "Learn" button. Move the element in the > plugin window with your mouse, then move a knob or fader on the > keyboard. Disable the learn button. Hi Peter, thanks to your tip I can finally edit sounds "on the fly" instead of having to use the mouse. I noticed that in the arrangement window I had to choose "view track automation" and then select the parameter which I wanted to change. Do you know if it's possible to simultaneously change two parameters of the same plugin, for instance cutoff and resonance, and have Logic record these changes? Which supported surface do you use? Kind regards, Bart