only drone, adjustable: cylindrical, straight, no bell, cavity? / single reed

Bąk - Polish

Bâzoi - Romanian

Rondinaïre - French: Occitan (Auvergne)

Trubanj - Croatian

·? (drone [Term not mentioned in available sources]) - Arabic* (Tunisia)

·? (drone [Term not mentioned in available sources]) - Ukrainian

·? (drone [Term not mentioned in available sources]) - Ukrainian