Frank, you obviously did an AMAZING job setting up this puppy! Incredible, clean, fast action. Wish I had the means to send you my beloved 400 #1485 & just say "Have AT it, my friend!" Maybe one day. WOW! Pretty incredible PLAYING too, I should add! I'm think I've seen this clip before, but it sure bears repeat watching! It's funny, regarding the key clicks - my first thought was that they were a bongo-type percussion effect recorded as part of that "most unique" sound! They worked in a jazz-sorta way, but yes, you'd only want them as an additional option!
Cheers to you all, & happy Fathers Day to those who are!