The đàn bầu is a musical instrument that comes from Vietnam. It is made out of wood and has only one string. When you want to play it, you use a small stick called a pick to pluck the string. The sound that it makes is really peaceful and calming, and many people in Vietnam love to listen to it.
The đàn bầu is a bit tricky to play because there isn't a lot you can do to change the sound it makes. Unlike other instruments like the guitar or piano, where you can press down different keys or frets to make different sounds, the đàn bầu only has one string, so getting the right sound takes a lot of practice.
Despite being a challenging instrument to play, many people in Vietnam love it for its beauty and unique sound. So, if you ever visit Vietnam, be sure to listen to some đàn bầu music!