i found this article verry time ago on internet. maby has nothing to with this topic but good to know. the article is about ROYALTY-FREE ACCESS TO yamaha XG SOUND LIBRARY for software Developers...............

link:
http://www.entrepreneur.com/tradejournals/article/55491478.html

and this article is good one too:

first short text from this article:

hree-point agreement:
Yamaha and Roland have agreed on the following three points.
1) Both companies will actively support the GM2 Format established in 1998 (see Note 2).
2) Both companies will offer open access to Yamaha's XG Format (see Note 3) and Roland's GS Format(See Note 4).
3) Both companies will develop hardware and software products to support all three formats, i.e. GM2, XG and GS.

"By combining our efforts and actively supporting the GM2, XG and GS Formats, we are committed to offering better compatibility and much wider availability of MIDI content to elevate the usage and benefit of MIDI," said Yamaha Corporation President Shuji Ito.
"Both Roland and Yamaha have pledged to actively seek the endorsement of other companies to ensure that GM2 becomes the global standard," added Roland Corporation President Katsuyoshi Dan.


link: http://www.global.yamaha.com/news/2001/20010119.html

[This message has been edited by AFG Music (edited 06-17-2010).]