Would it be appropriate for me run completely different lyrics to the tune?
Yes, as long as you don`t change the topic completely. e.g, describing how you failed as a lover at your last date. etc.
accessible pronunciation guide that helps with phonics?
Google translate and press the sound icon.
falconry seems to have quite rich history within Poland,
As a child, one of the books in our home library I extremely liked due to its colourful illustrations was the book on hunting in the past Poland. This picture was on the cover: