These are wavetables that were created using the somewhat infamous Ensoniq SQ80 waves that are up on http://www.buchty.net/ensoniq/index.html . They are a little different in that they use Fathom's -fill- function to create 16 discrete waves instead of the original 4 or 5. They can be used to scan though, as individual waves or set up like the SQ80 by mapping them across the keyboard. The lower register starts at index one and moves upward to index 16. Use the keyboard tracking modulator on the wave index dial to set that up. I hope you enjoy.