These Indian musical instruments have blended their mystic soundsin forming legendary Indian folk music & classical music. Indian musical instruments can be broadly classified into three categories, mainly classical, western and folk. See Carnatic music and Hindustani music. Most of the Indian musical instruments have evolved over centuries. Each instrument has its own history behind its evolution. Like any other culture's evolution. In a culture's early stages, artifacts, musical Instruments, and lifestyles are simple and basic in nature. The shehnai belongs to the woodwind family of instruments.The outer body of the shehnai is made of wood with a metal bell at the tip of the instrument. A tanpura is always conspicuous by its absence. A tanpura is made of wood and has a larger base (toomba) than a sitar.