This clipping could be of the 1980's. https://www.youtube.com/watch?v=NQfaO15wEsc I could identify Vidwan-s Sri Bolur Rama Bhattar, Sri Kuduru Krishna Jois, Sri Lakshminarasimha Sastri (all of Bangalore). I think there was Vidwan Peri Suryanarayana Sastri of Andhra Pradesh too. regards subrahmanian.v