Unnal Mudiyum Thambi is a 1988 Indian Tamil-language musical drama film written and directed by K. Balachander.
The film stars Kamal Haasan and Seetha in the lead roles, with Gemini Ganesan among the supporting cast. The movie also features Manorama, Janagaraj, Prasad Babu, Nassar, and Delhi Ganesh.
The story centers on ideological conflicts between 'Bilahari' Marthandam Pillai, a respected Carnatic musician, and his younger son Udayamoorthy. Pillai exhibits discrimination towards people from lower castes, which leads to criticism from his son who champions societal welfare. Ultimately, the son walks out of their lives permanently due to these differences.
The remaining narrative follows the events that gradually change Pillai's perspective. Ilaiyaraaja composed the film's soundtrack and background score. R. Raghunatha Reddy served as the director of photography, while R. Bhaskaran handled the editing and Mohanam was credited as the art director.
