Looking at purchasing V Collection and KeyLab Essentials but haven't been able to find any threads or demos on how you gig with V-Collection (or Analog Lab V). My main question is how do I switch sounds in milliseconds? Do I need a touch screen laptop? Can I assign a button, dial or fader to make the switch? How many different sounds can a song contain with VC? I believe ALV is limited to two but what about VC?