Here are some definitions you might find useful to words that you may run across in the reviews:
Backpressure - The
Dictionary lists backpressure as "Residual pressure opposing the free
flow of a gas or liquid, as in a pipe." In whistlogical terms,
backpressure is the level of resistance felt when blowing into a
whistle. The amount of backpressure can vary greatly from whistle to
whistle depending on their construction. Backpressure can greatly reduce the amount of air required to
play a whistle, allowing for longer phrases before one needs to take a
breath. Professionals
and more experienced whistlers tend to prefer whistles with more
backpressure as it can also allow for more control using just ones
breath. However, begining players tend to enjoy whistles with less
backpressure, as it can be easier to get a good sound right off
the bat. But in the end it is a matter of personal preference as to how
much backpressure is
"good". Often, as with many other things, it is a matter of finding the
right balance that works for you.
Chiff - In reference to the
Irish whistle, chiff refers to the turbulence or distortion (somewhat
akin to white noise) inherent to a lesser or greater degree in the tone
of most whistles. Chiff can also sometimes more specifically refer to
said noise that occurs at the beginning or intitial attack of a played
note.
Session - A meeting of
musicians, generally at a pub, bar or sometimes even a kitchen, for the
purpose of playing Irish Traditional Music. Sessions generally have
their own unwritten but collectively acknowledged code of etiquette.
Fipple - Part of the head or
mouthpiece of a whistle including the block and wind way that focuses
the air at the edge/blade/labium, which produces the sound.
Ornaments - I will often use
the word ornaments to refer in general to the techniques or "tricks"
that are idiomatic to the Low whistle, such as rolls, crans, cuts and
slides.