I recommend viewing the short form video, printing the instructable for your work time, then viewing the long form video (so that you can see what I did).
Short form video.
Step 1: Gather your ingredients for the flute
A drill and bits to make a large and small hole. A 1/2" drill bit and a 15/64" bit worked for me.
1 or more carrots
Long, narrow tools to take carrot debris out of the hole. E.g. skewer or chopstick.