Even in the pre-independence era, Kalki led a strong movement for only tamizh isai kachcheri. No samskrit or telugu kirtanais were permitted. Even Ariyakudi Ramanuja Iyengar was not allowed because he wanted to start the session with a samskrit kirtanai (his promise to his guru). Kalki has written an essay on tamizh isai.
One of the points mentioned in the movie 'Sindhu Bhairavi' was to include Tamil songs in Carnatic music concerts!
Someone commented that this point should have come at least a decade ago! Sri. K B has told it very late!! :clock: