Very important discussion, and I still have doubts
about dealing with copyright,
real example:
I am Ukraine based and co-wrote a song with lyricist from UK and singer from US recorded it
( I sent that song in mp3 forum,it's title is Living By The Sea).
By the way, singer has a right for sound recording and if we with lyricist want to use that song with her performance commercially then we should get her permission.
I know it exactly: there is even so-called "release form" that you should sign with every musician and singer who made your demo if you want to use a demo commercially.
Now there are a lot of international co-writes among hit songs too.
So, under what law we are in my case:
US, UK or Ukraine?

http://www.soundclick.com/aleksandrsaltovskiy