David - I've just posted a video on YouTube - it's a song from the WF (Will Fly) Trad called My Blue Heaven. I play the second chorus on a high whistle in D - you might find some tips there for your own recorder playing. The 3rd chorus is dedicated to that great folksinger J. Hendrix, and the fourth and last chorus is a duet with a Chinese immigrant.

Watch, listen and learn. It's at:
My Blue Heaven