The đàn hồ (Chữ Nôm: 彈胡) is a two-stringed vertical violin with wooden resonator. The term hồ ("barbarian, central Asian" 胡) derives from Chinese hu, as in Chinese huqin 胡琴). It is similar to the yehu.[1]
The second man from the right is playing the đàn hồ
Terry E. Miller, Sean Williams The Garland handbook of Southeast Asian music Routledge 2008 Page 263 "Three other bowed lutes have different resonators: đàn cò phụ "subordinate fiddle," with its slightly larger resonator; đàn gáo or đàn hồ "coconut-shell fiddle"; and đàn cò chỉ "little fiddle." "
