The song is “Neelakkadambin Poovo.” This very pretty scene comes from the film adaptation of the 1952 play Ningalenne Communistakki, which translates as “You Made Me A Communist”; it was the most famous play from the Kerala People’s Arts Club.
Here’s a little info from KPAC In India:
A bold experiment in political theater in Kerala, KPAC (Kerala People’s Arts Club) was founded in 1950. It was the brainchild of a group of youngsters – G Janardhana Kurup, N Rajagopalan Nair and K S Rajamani – who had close ties with the undivided Communist Party of India (CPI).
‘Ente Makananu Sari’ (My Son is Right), in 1951, was the first drama performed by KPAC. But it was the second drama, ‘Ningalenne Communistakki’ (You Made Me a Communist) that launched KPAC in Kerala’s cultural scene. Soon, KPAC spearheaded a powerful people’s theater movement in Kerala. The play was banned by the authorities on the ground that it encouraged the people to ‘rebel against the government.’ Communist Party of India led a mass movement against the ban and these incidents heightened the play’s popularity. After the ban, the play made history in Malayalam Theater by becoming the first play to be staged more than 10,000 times. It was staged in several cities across the country.
Soon KPAC caught the imagination of public and it started churning out plays at regular intervals mainly based on social themes. The plays especially reflected the aspirations of the downtrodden for a society free of exploitation and oppression. Along with criticizing the existing society, the plays often looked for an alternative form of society and explored the possibilities of achieving it…
And some more interesting info, with news of a sequel, from Movie Dost:
KPAC’s second drama ‘Ningalenne Communistakki’ (You Made Me a Communist), was a path-breaking play in the history of communism in Kerala. It was first staged in Chavara Thattassery Sudarsana theatre in Kollam district on December 6, 1952. Thoppil Bhasi wrote the play which portrayed the transition of an elderly man from a conservative upper-caste Hindu into a Communist. Later, the drama was made as a film in 1970 with evergreen hero Prem Nazir in the lead.
After fifty-six years, the drama is now coming back with a sequel by Soman, son of Thoppil Bhasi. The sequel, titled ‘Enum Ente Thampranum’ (Me and My Lord), is all set to be staged in August. The drama will have a few characters from the original.
That item was written July 9. August has passed, and so far I haven’t been able to find news of the staging of the sequel. Maybe it’s been delayed. But I think it will be interesting to find out more about it, whenever it happens.