Lesson 2-1-7 - Low G Sharp
Low G sharp is one of the nine half-holed notes in the standard 25 notes for a Key of D Whistle.
It's made by covering the top two holes completely, then half-covering the third hole, leaving the last three hole uncovered, and blowing softly into the mouthpiece
I find that squashing the left ring finger up against the middle finger and pressing down hard on the edge of the hole gives the most control while playing this note.
While no half-holed note is easy, Low G sharp is probably the easiest one, and allows you to play a full Key of A Scale. I've also found that I use Low G much more than the other half-holed notes.
As with all the half-holed notes, I'd recommend learning the full-holed notes first before trying them. There are fantastic whistle players out there who cannot play these notes with any degree of proficiency, and they still manage to play fine music.