What type of instrument did Vladimir Oidupaa play
Bayan (accordion) The bayan (Russian: бая́н ; ] ) is a type of chromatic button accordion developed in Russia in the early 20th century and named after the 11th-century bard Boyan.
Adriaan Fokker Adriaan Daniël Fokker (] ; 17 August 1887 – 24 September 1972) was a Dutch physicist and musician. He was the inventor of the Fokker organ, a 31-tone equal-tempered organ.