The Chennai December Music Season has a dedicated website, featuring the schedules of most of the concerts covered across several venues in the December music Season
They also provide links to various dance and music websites, as well as music stores :
http://www.chennaidecemberseason.com
Last year they covered concert schedules at 38 venues, including AIR's Akashvani broadcasts : http://www.chennaidecemberseason.com/p/ ... -2017.html
They also offer a public google calendar that may be added to one's own : http://www.chennaidecemberseason.com/p/ ... endar.html
Their blog archives go back to 2009.
The team : http://www.chennaidecemberseason.com/2009/10/about.html