प्रसिद्ध ध्रुपद गायक उस्ताद नासिर अमीनउद्दीन डागर का जन्म कहाँ हुआ था?

Which of the following is a major tradition of Indian classical music that originated and developed primarily in Northern India?

Bharat Ratna awardee Pandit Bhimsen Joshi was a leading exponent of which musical gharana?