David Rose asks

“I too have an APC40. What I would like to be able to do is have one midi channel assigned as a software synth channel to play live from one midi keyboard (not pre-recorded midi clips as in your video). It would be lovely to assigned the Clip Launch buttons in one column to a variety of software instruments so that one could quickly switch to different sound sources when playing live.”

So I present to you, how to to switch instruments using dummy clips.

If you would rather use a knob check out my chain selector tutorial its for an effect rack but its very simular to an instrument rack.