The trống cái or trống đại "great drum" is a traditional Vietnamese bass drum.
[1] It has a barrel-shaped wooden body,[2] and gives a deep booming sound.
[3] The trong cai drums are typically hung on a stable frame, and in traditional drama the trống đại cổ is beaten to support the singers.
It can also be carried and used at the head of a dragon dance procession.
[4]