Double Bass Wikipedia style database?

[Beast]

I remember running across a wikipedia style database of sheet/orchestral music, but I frankly can't remember the name, does anybody happen to know the name of this website?

Thanks!

 

[conditional78]

Maybe one of these?

http://imslp.org/wiki/Main_Page
[Invalid or Expired Link Removed]

 

[Beast]

That Petrucci music library was exactly the one I was looking for, thanks!