Aye aye Skipper! The whistle was born on PAL, I was filling out the music bio spreadsheet in the Music chat channel and I put down "whistle" for my third instrument (I play a lot of instruments so this was a hard choice). That made me realize I hadn't busted out my whistle chops yet in open mic. I added the whistle section just for open mic, that has never been a part of that song's performance before!
I spend a lot of time whistling ;)