The folk music of Bangladesh is both ancient and rich. Among the most significant folk music of Bangladesh is the Murshidi, Bhawaiya, Bhatiali, Jari, Sari, Kabigan, Baul, Kirtan. The most popular and striking folk musical instruments are ektara (single string), dotara (four or six-stringed), Khamak, dhak, flute, sarinda and the conch shell. The lower part of the wooden dotara is covered with goat skin with which the strings are tied together and brought to the upper part. There are generally three keys on either side. Like the dotara, sarinda is also made of wooden frame but its sides are carved into a beautiful shape.