C fingering on D whistle

Whistle
1

I’ve been learning the whistle for maybe 3 months now, mainly from a book I got along with my instrument. I found the hardest note to be C, which the book instructed me to play with four fingers, covering holes 2,3,4 and 6 (counting from the top).

While failing to get this note correct, I discovered that it sounded pretty much the same with just holes 2 and 3 covered. So I checked online and - behold! - most fingering charts do indeed tell you just to use 2 and 3.

Is there any advantage to sounding the note with four fingers instead of 2?

2

From my experience the fingering depends on your whistle and its maker. Some whistles give a more in-tune C with OXX OOO fingering, whereas others are closer to proper tuning with OXX XOX.
Then there is of course half-holing the first tone hole.
Personally I use all three methods depending on the whistle and piece I’m playing.

3

As said above, it varies from whistle to whistle. Do whatever works, and that depends very much on the tune you are playing.