The Bag Pipe is a traditional Scottish instrument, with similar instruments found in several other countries. 

It consists of a large, tartan bag, inflated by the player, which supplies wind to several pipes with reeds. One of the pipes sounds a continuous low note called the "drone". Early bagpipes were known as shepherd's  instruments in Roman times, in Europe, west Asia and North Africa.

The bagpipes have very limited pitch range, from (approximately) the G below middle C up to the A above it, a total of only 9 notes. Moreover, they do not conform to the equi-tempered scale used by most instruments in current use, so they sound 'out of tune' especially when played with other instruments.  The scale consists of the white notes of the piano between the G and the A, except that the C and F are closer to C# and F#.  Frequently the bagpipes are much sharper than this, with the lowest note as much as a tone and a half higher.   It has no chromatics.