"Hej Sokoly" - song research

hey I'm looking for as much possible information on this song as possible, I'm doing a project for a music theory class of mine, ill be doing a variation on it and my choir will eventually sing it, so i need as much information on this as possible!

smbit11.republika.pl/music/sokoly.htm

i found this, but im not sure how accurate it is, ive found a few versions of it.

some things im looking for:
the history of the song
accurate sheet music
good CD's of this song and others like it.
+ anything else you can add.

thanks everyone!

Have you been able to find any more sites that have sheet music of any other polish folk songs by chance? thanks.

I'll unite to lukasz_wie
What is known about this song? I have two its recordings. I can send them. My e-mail truhlei@mail.ru

Does any one know how I could find the lyrics to this song....in Polish and maybe with an English translation?

ive still no luck on the song, anyone have anything on it? history or anything.

oh and just to clear up the first post, my choir MIGHT sing it, ha! if its good enough :] we'll see