Tin whistle all the holes closed, the whistle generates its lowest note, the tonic of a major scale. Successively opening holes from the bottom upward produces the rest of the notes of the scale in sequence: with the lowest hole open it generates the second, with the lowest two holes open, it produces the third and so on. With all six holes open, it produces the seventh. As with a number of woodwind instruments, the tin whistle's second and higher registers are achieved by increasing the air velocity into the ducted flue windway. On a transverse flute this is generally done by
Toot, Whistle, Plunk and Boom would need four horns of different lengths. But if we create a horn with valves, we can effectively have four horns in one, and this fact is celebrated with another jazz solo. We return to the cavemen, where Caveman Whistle is trying to impress his "cavegirl" by blowing on a tube of grass; he further discovers that adding holes to the tube allows him to modify the "whistle" in interesting ways (the more holes Whistle adds the longer the grass tube gets and he invents the first flute). The cavegirl is impressed, but then a rival caveman appears, bonks the