Hello forum,
I wasn't sure where to post this as it refers to 2 different keyboards, but will post it here. Please feel free to move if its not in the right place

I was watching Youtube the other day and stumbled on this fabulous version, IMHO, of "In the mood" originally by Glenn Miller, played on the Yamaha EL02C. It appears that this keyboard is much more expensive than my luvverly Tyros 4, so with that in mind, thought I may take the opportunity to ask a couple of questions, of which I am guessing the answers will be no, on both counts, LoL
Link:
https://www.youtube.com/watch?v=K5h0-Fqm1x4&list=RDK5h0-Fqm1x4&start_radio=1 (In the Mood)
My first question is from 1:07 on, I notice that the right hand upper manual voices change, and she doesn't appear to be changing any registrations to action the changes, so was wondering how this is achieved? Is it pre programmed by the player, say by bar count?
My second question is, is this function possible on the Tyros 4, using the split keyboard function?
Sorry, I had another question as well. Does the EL01/02 series use the same .sty files?
Many thanks for any answers, and please stay safe during these very trying times!!!
Another fine performance by the same person on the same keyboard which i thought was spectacular as well
Link:
https://www.youtube.com/watch?v=hfSnbwz14mg&list=RDK5h0-Fqm1x4&index=2 (Title music from Thunderbirds 60's TV series)
Many thanks,
Chris Morgan
Perth, Western Australia