Songs can get, with permission, different lyrics for special occasions and TV/radio ads. Payment of a fee, of course, in most cases. Different titles for a song is often seen with US & UK versions with different titles & thus slightly, at least, different lyrics. Books in the past sometimes had different title than in UK in USA and collectors in my part of the world, which had the UK versions because of the book publishers' world carve-up, were always looking to get copies of books with their US titles. Films. we know, were no different and can be confusing.