Ewa has lent her vocal talent to what i presume is a charity recording with various other Polish artists.
You can hear the song and view the video here -
You can spot Ewa in the video and her vocal parts are pretty easy to recognise.
Due to the failings of Google Translate that's all i really know about this project unfortunately. Apologies but i wasn't aware of this until today?
More information when/if we get it.