Show Us World Musical Thematic Covers

Besides being on topic, this cover is an EFO due to foreign matter, likely a bit of paper on the envelope during printing.

Traditional Musical Instruments, Algeria 1968 FDC:

Two sets of musical instruments issued by DDR:

Musical instruments of different countries and regions of the world: Mongolia, Italy, Sudan, Germany, North Africa and Bohemia. The instruments are exhibited in the Musical instruments Museum, Markneukirschen, 1971:


Musical instruments from Vogtland, a region spanning the German states of Bavaria, Saxony and Thuringia and north-western Bohemia in the Czech Republic, 1977:

Undated, but quite early: