VOCAL form of Hindustani CLASSICAL music. It is a two-headed drum which is barrel-shaped, also known as mridang.Tarana, Drupad, Khyal, and Dhamar are MAJOR vocal forms of Hindustani classical music.Hindustani classical music originated in 12th century CE.The music has 7 BASIC notes and 5 interspersed half-notes, which result in a 12-note scale.