What raaga is "Kandupudichen kandupidichen" from Guru Shishyan, and what is odd about its usage?

Subha Bandhu Varaali.

It is considered as a very tragic Raaga. But Ilayaraja dared to use it in a very comic setting.

If you want to know how this raaga sounds in a tragic setting listen to Raja again in " Vaikaraiyil.. Vaigai karaiyil" from Payanangal Mudivathillai.