The Moldavian whistle (furulya) has a narrow reverse-conical bore, designed for playing in the higher registers. The commonest pitch is A, but they are also made in G, B flat and C. For dance band playing, you nearly always vocalize a low hum while blowing, which adds a buzz to the sound and gets greater volume. A good whistle will cover the whole range listed below. You won't be able to do that (without shrieking, or at all) on a parallel bore whistle like those commonly used for Irish music.
I've used ABC pitch notation, but an octave down. Some notes have alternatives. Halfholing is also possible.
e' 1-- --- d' 12- 12- c#' 1-- --- b 12- --- a 123 --- a -23 --- g# 123 4-- g# --- --6 g -2- --- f# 1-- --- e 12- --- d 123 --- c# 123 4-- B 123 45- A -23 456 G# --- --- G -2- --- G -23 --- F# 1-- --- E 12- --- D 123 --- C# 123 4-- B, 123 45- A, 123 456