Here is a link to European Styles that are song specific but work well for other songs.
http://www.yamahamusicsoft.com/index.php?action=ProductCatalog&category_id=193

And here is the Link in German that has short Demos of each style and tells you which one is for the Tyros= XT
They are not in alphabetical order:
http://www.yamahamusicsoft.com/others/germany/index.php?page=0106

Some of them are quite good. They are done by Programmers from Yamaha Germany.

I hope you'll find something.

Here is a link from Yamaha US for the Tyros:
Click on music content
http://www.arrangerworkstation.com/store/

Here is a link from Midi Spot for the Tyros and some T2 styles. Some are very good and you can listen to them too:
http://midispot.andmccoy.com/site-box.cfm?SIID=1&SEID=173&CATID=11

I hope this helps

Eric