Occasionally I will whistle but I mostly sing whatever happens to be the Song stuck in my Head that week...a lot!
I know what you mean Kitty Good to see you by the way... smile,
I too have been known to abandon the task at hand and whip the Guitar or the Mandolin out after singing a particular Song or a line that may work in one I am working on and.....oh well...work becomes a lost cause!
I used to play Music in the background as I worked but these days I save the pleasure of listening to Music when it can have my full attention.
By the way I am a pretty bad Whistler anyway, just ask the any of the Animals that share my space!;)
Jude