Neys are keyed instruments.
They are similar to penny whistles in that way. So, a Ney
player usually has a set of neys to use depending on the
Maqam and key. The normal set consists of seven Neys.
However, a competent Ney player usually uses two. The
Neys are referred to by the name of the second note. That
is the note the Ney produces when the first hole is
uncovered. In the typical Ney, the note is "D"
. It is usually called by the Turkish name which is
"Docah".

Neys For the Docah Ney which is the most commonly
used ney, when all the
holes are covered, the basic note is 'C' or Do as most
Egyptian musicians call it.
The following table contains
the list of the neys and their standard notes: