The Rare Old Mountain Dew Sheet And Tin Whistle Music
the first piece is set in the key of D' and the second is for a C' whistle. A trad. Irish song which was recorded by almost every ballad group in the world including The Dubliners and The Clancy Brothers.
Below Is The Same Song In Key Of C. Well the sheet music stays in Key but the whistle notes change.
Here's another version below.