The great Highland bagpipe is classified as a woodwind instrument, like the
bassoon,
oboe, and clarinet. Although it is further classified as a
double-reed instrument, the reeds are all closed inside the wooden "stocks", instead of being played directly by mouth as most other woodwinds are. The great Highland bagpipe actually has four reeds: the chanter reed (double), two tenor drone reeds (single), and one bass drone reed (single). A modern set has a bag, a chanter, a blowpipe, two tenor drones, and one bass drone. The
scale of the chanter is in
Mixolydian mode, which has a flattened seventh scale degree, though many older pipes are set to a standard Ionian mode with a half step seventh note to the high A - essentially (on the piano) this is like a C major scale with a B♭ below the middle C. It has a range from one
whole tone lower than the
tonic to one octave above it. The drones are tuned to this tonic note, called A (specifically
A4). The nine notes of the chanter scale are "low G, low A, B, C (sounds as a C), D, E, F (sounds as a F), high G, and high A". However, the A pitch of most pipers and pipe bands currently is somewhere around 470–480 Hz.
Standard pitch B4 is 466.16 Hz. A minority of pipes, made or adapted for playing with other instruments, sound at exactly this pitch, with the scale sounding A, B, C, D, E, F, G, A, B. These are thus a
transposing instrument in D-flat major (i.e. the pitch at which a notional C, were the bagpipe able to play it, would sound), but in bagpipe terminology are referred to as B instruments, with the pitch given for the tonic A rather than the C of conventional transposition terminology. As stated, most bagpipes currently sound sharper than this, but the great Highland bagpipe is often nonetheless described as a transposing instrument in D. Historically it was indeed flatter, as evidenced by recordings, and extant instruments. Highland bagpipe music is written in the key of A with no key signature, or in
D major, where the C and F are sharp (despite the key-signature usually being omitted from scores), however only some tunes are in D major. Due to the lack of
chromatic notes, to change key is also to change modes; tunes are in A
Mixolydian (most commonly), D
major, B
minor, or occasionally E
Dorian. In
concert pitch (notes on the piano) it will be B
Mixolydian, E major, C
Aeolian, or occasionally F Dorian. Traditionally, certain notes were sometimes tuned slightly off from
just intonation. For example, on some old chanters the D and high G would be somewhat sharp. According to Forsyth (1935), the C and F holes were traditionally bored exactly midway between those for B and D and those for E and G, respectively, resulting in approximately a
quarter-tone difference from just intonation, somewhat like a
"blue" note in
jazz. Today, however, the notes of the chanter are usually tuned in just intonation to the Mixolydian scale, with the G tuned to the
harmonic seventh which is significantly flatter than the just
minor seventh or the equal temperament minor seventh. The two tenor drones are an
octave below the
keynote of the chanter (low A), and the bass drone two octaves below. There are some documented examples of other tunings: Forsyth lists three traditional drone tunings:
Ellis, A3–A3–A2;
Glen, A4–A4–A2; and
Mackay, G3–B3–C2. Modern developments have included reliable synthetic drone reeds as well as synthetic bags that deal with moisture arguably better than hide bags. The chanter reed is typically made out of cane. It is possible to get synthetic reeds for chanters but it is not very common. The cane reeds change pitch as the moisture levels change, meaning that as they are played they go out of tune. Until recently drone reeds were also cane but now many pipers have replaced cane reeds with synthetic reeds. Cane drone reeds are incredibly unreliable; they could stop working without warning and also change pitch as they are played. Synthetic reeds are much more reliable, they are easier to use and don't change pitch meaning once the drones are tuned to each other they will stay there and only have to be tuned to the chanter. == Materials ==