bell which narrows back down at the end like a bulb or egg, but some recent instruments just have a larger tubular section at the end past the fingered part of the barrel. "Brelka" used to be just a regional name for a zhaleika, until Andreev used it to distinguish the double-reeded instrument from the single-reeded zhaleika. Like the zhaleika and volynka, you have a diatonic instrument set up in the Mixolydian mode, with one octave available. http://www.mappamundi.com/myrtle.htmlThe Russian trumpets are called Rozhok. The rozhok (pronounced "ra-zhOk", plural rozhki: "razh-KI") or "Vladimir horn" is a wooden horn with trumpet-style mouthpiece and finger holes. It has historically been most common in the northeast-central parts of European Russia near Vladimir (hence the name "Vladimir horn") and Iaroslavl. There are many types of Rozhki. The basic diatonic set of rozhki would include one or two sopranos in G, an alto in C, and a tenor (an octave below the soprano) in G. Besides the diatonic instruments; there are now chromatic rozhki (as pictured). The rozhok can play its first octave in pure tones; then by overblowing you can go into further (higher) registers. (So,unlike the previous instruments, you get more than an octave.)The Russian flutes are called Svirel'. The svirel' (pronunciation approximately [svir-YEl']) is a basic Russian pennywhistle. The sopil'ka is more common in the Ukraine, this is their version of a recorder. The fingering system is basically chromatic unlike the svirel' which is mostly diatonic. The sopil'ka comes in Piccolo (Fa or F), Soprano (Do or C), Alto (?), Tenor, and Bass. The Dvadyensivka is a diatonic double sopil'ka. The one I have is in Do (C) major. Using both hands to finger, one on each "barrel" one can play a Do major scale in thirds. Fingering with seconds, thirds, or fourths allows one to fit the harmony of most folk songs. I have seen other versions of this from Romania but they have b...