Thanks, LJ. Will see if it works on a Bb whistle. We could use some rain here.

I wonder if the alleged title "Bonnie Lassie" comes from a poor recollection of Harry Lauder's "I Love a Lassie." A few bars (but no more) somewhat resemble "Scotland the Brave" :

https://www.youtube.com/watch?v=CcCyHc89m7A