[1] Spotting the talent in his son, Mallikarjun's father engaged him to a travelling Yakshagana (Kannada theatre) troupe.

The owner of this troupe took a liking to the tender and melodious voice of Mallikarjun and encouraged him to sing different types of compositions during the drama-performances.

[1][5] Mansur was well known for his command over a large number of rare (aprachalit) ragas such as Shuddh Nat, Asa Jogiya, Hem Nat, Lachchhasakh, Khat, Shivmat Bhairav, Kabir Bhairav, Bihari, Sampoorna Malkauns, Lajawanti, Adambari Kedar, Ek Nishad Bihagda and Bahaduri Todi, as well as his constant, mercurial improvisations in both melody and metre without ever losing the emotional content of the song.

The museum is managed by Dr. Mallikarjun Mansur National Memorial Trust functioning under the Department of Kannada and Culture, State Government of Karnataka.

[15] In 2013, a five audio CD collection, "Akashvani Sangeet" of his music including rare "Vachana Gayana" renditions, was released by All India Radio archives at a ceremony held at Srijana Rangamandir at the Karnatak College Dharwar campus.

[16] In September 2014, a postage stamp featuring Mansur was released by India Post commemorating his contributions to music.