Ustad Hassu Khan, Ustad Haddu Khan and Ustad Nathu Khan were exponents of the ___________ Gharana.

Gwalior

The correct answer is Option (2) → Gwalior

Ustad Hassu Khan, Ustad Haddu Khan, and Ustad Nathu Khan were exponents of the Gwalior Gharana.

The Gwalior Gharana is one of the most prominent gharanas (musical lineages) in Hindustani classical music. It is known for its emphasis on khayal singing, a genre of vocal improvisation. The gharana was founded by Nathan Khan, a musician in the court of the Mughal emperor Muhammad Shah. His grandsons, Haddu Khan and Hassu Khan, were the first to develop the khayal style into its present form. Their son, Ustad Bade Inayat Hussain Khan, was one of the most famous singers of the gharana and is credited with introducing many new techniques into khayal singing.