Nagaraja Rao Havaldar (Kannada: ನಾಗರಾಜ ರಾವ್ ಹವಲ್ದಾರ್) (17 July 1959) is a Hindustani Classical vocalist from Karnataka, India.

Education
Music
Havaldar is a disciple of Madhava Gudi, himself a prime disciple of the Kirana scion Bhimsen Joshi. He is also a disciple of Panchakshari Swami Mattigatti, a senior disciple of Mallikarjun Mansur, of the Jaipur-Atrauli Gharana.

Hari & Sukhmani (also styled as Hari + Sukhmani or Hari and Sukhmani) is an Indian folktronic duo comprising Hari Singh Jaaj and Sukhmani Malik, who are known for fusing traditional folk music of Punjab with electronic music, and incorporating elements from Sufi poetry of Bulle Shah, Baba Farid, Kabir, and Shah Hussain, in their compositions.

Gangubai Hangal (5 March 1913 – 21 July 2009) was an Indian singer of the khayal genre of Hindustani classical music from Karnataka, who was known for her deep and powerful voice.Hangal belonged to the Kirana gharana.

Suresh Haldankar was an Indian classical singer, actor and teacher.

Srikrishna Haldankar (1927 – 17 November 2016), better known as Babanrao Haldankar, was an Indian classical singer, composer, and music teacher of Agra gharana of Hindustani classical music.

Life and career
Babanrao Haldankar was the son of painter Sawlaram Haldankar (1882–1968), and has won awards through his career.and was an Adjunct Professor of Indian Music at the University of Mumbai.