The Galway Girl is a song written by Steve Earle and recorded with Sharon Shannon in 2000. Eight years later a cover of the song by Mundy and Sharon broke all download records in Ireland. It is a real party song and seems like the more musicians you add the better it gets.
In 2017 Ed Sheeran also scored a big hit with Galway Girl this hit has however no relation with the song in this post, though it also a great a song.
In the sheet music below you can find the tin whistle notes played after each verse and what is also being played by all melody instruments. In the other file the lyrics and chords are given with the right order of the instrumental parts.