Take a look at Edirol (Roland) Orchestral.
Old and discontinued, but it will give you all the orchestra sounds you will need. It also has a very good piano (good to my ears at least).
see that link:
http://www.youtube.com/watch?v=yLOz-Y49h4k and all the related stuff on youtube
also check out those guys in another forum talking about the product
http://www.northernsounds.com/forum/archive/index.php/t-21523.html [This message has been edited by trident (edited 12-14-2008).]