Complex sentence: Bihar has contributed to Indian (Hindustani) classical music and has produced musicians such as Ustad Bismillah Khan and dhrupad singers like the Malliks (Darbhanga Gharana) and the Mishras (Bettiah Gharana).
Split into simpler sentences: Bihar has contributed to Indian (Hindustani) classical music. The region has produced such musicians as Ustad Bismillah Khan and various dhrupad singers, like the Malliks (Darbhanga Gharana) and the Mishras (Bettiah Gharana).