Believe it or not, but despite how amazingly accurate the sheet music was (it sounds great, by the way), it didn’t have the whistle!
I’m scrambling to try and get the whistle in at the beginning, but the only site I could find with it is… just awful… The note-types used and the space between rests don’t many any sense. All I have to go on is exactly which notes are used.
So, still working on it. It’s almost done, though.