One of the messages (from Basiljet) refers visitors to a Yamaha Demark site"
"Not everybody will know that you can download zips of the factory disks supplied with PSR350, 740, 2000, 9000, 9000pro and cvp209 from
http://www.yamaha-europe.com/yamaha_europe/ denmark/service/040_downloads/10_download_pro
ducts/ "
You will have to put those two parts of the URL together to get to the site. It is Yamaha in Denmark and anyone can download a number of the factory disks for various Yamaha keyboards. The styles in the file area are from this source. The factory disk for the PSR9000 had some 66 styles on it. (I think the CVP disk, however, had only midi files.) Since "Yamaha" has made these styles freely downloadable, I think they are now fair game. I'm not so sure, however, about the public offer to swap commercial style disks. I'm also not so sure about the assumption that "commercial" styles are automatically good styles. If you happen to have a PSR-2000 (or PSR-1000), I think you will find an extraordinary set of "good" styles available at
http://psrtutorial.com.