I have been hunting around for music to put out on my webpage for fellow whistlers to enjoy. Must have been the enforced homestay with the blizzard yesterday, but I published an adaptation of Purcell’s Trumpet Voluntary in D. Silly, perhaps…
It’s the last song at the bottom of this page. The sheet music includes melody line and whistle tablature, and there is a midi for those of us who learn better by ear. 
I hope you like it!