Bajan

A faction recalled Duke mentioning Bajan ancestry at some point, which lent credence to the tale.

Source: wiktionary

Sinfonietta for orch and two bajans (Russian accordions).

Source: wiktionary

[…] kruglolitsa” with an accompaniment by balalajkas, domras and a bajan.

Source: wiktionary

[…] the Cantata for the Twentieth Anniversary of the October Revolution, a three-quarter-of-an-hour work for a massively outsized orchestra, an ensemble of bajans (accordions), an extra brass group, a collection of percussion, chorus, and, very briefly, a narrator who represents the voice of Lenin making a stirring announcement through a megaphone, here dramatically read by Gennady Rozhdenstvensky.

Source: wiktionary