So I downloaded the Midi file, unzipped, and there are multiple files - x9, xA, xt, xt2, xt3, and GM.
The Yamaha site has a page about which format to use with which instrument (
https://shop.usa.yamaha.com/midi-song-instrument-compatibility-chart)
That page says that for the CVP 805, the recommended version is T4, XT4. Neither of those are in the zip file. The Yamaha page also says, the following will work: T3, XT3 XT2 XT XA XG GM.
I tried the various files that were in the zip, and they do work. I couldn't tell much difference between them.
Does the Yamaha recommendations go in order - meaning is Yamaha saying that T3 is the best alternative if there's no T4 or XT4? In my case, the first match was XT3.
Thanks for the help!