The rubab is a stringed musical instrument that originated in Afghanistan and is also used in other regions of Central and South Asia, including Pakistan and India. It has a long neck with a pear-shaped body made of mulberry wood, and it has three or four strings that are made of gut or nylon. The sound of the rubab is produced by plucking the strings with a plectrum made of wood or bone. The rubab is often used as a solo instrument in classical music, and it is also used in ensembles and folk music. It has a unique, rich sound and is known for its ability to express emotions, particularly sadness and longing.