I discovered the wheel, I loaded few old tune1000 midi files to the psr910 and they all had been perfectly set up, nicely voiced, with lyrics and score playing without changing anything etc... like it is just made for the PSR!

My question is, what are similarly "yamaha ready" commercial midi files out there?
I am sure some people have experience with this.

Also I heard those tune1000 do not play nicely with tyros 4? Is that so?