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
Low whistle and British jigs, reels and hornpipes, it being easier to produce some ornamentation on the whistle, due to the size of the finger holes. The most common low whistle is the "Low D", pitched one octave below the traditional D whistle. A whistle is generally classed as a "low" whistle if its lowest note is the G above middle C or lower. Whistles higher than this are termed "soprano" or "high" whistles when a distinction is necessary. Low whistles operate on the same principles, and are generally fingered in the same way as traditional pennywhistles although for many, a "piper's