Here is an interesting program broadcast by AIR, unsure when, where 9 compositions of Tyagaraja are rendered by different artists and each composition has an introduction (in hindi though). It is an interesting mix of artists too. I will try to get the intro translated to English and add it on this post.

It is commendable that AIR had such programs in addition to the National program and the sangeet sammelan that was always a wonderful set of concerts across the country.