Some introductions by Prince Rama Varma
1) Informal intro to Carnatic music to a Western audience
http://www.youtube.com/watch?v=C4AuqsDwVTI
2) Thillana
http://www.youtube.com/watch?v=f07Tgs83VDk
3) Introduction to the 12 notes before teaching Gaa Ma Ma Ri Ga Pa to students
http://www.youtube.com/watch?v=AivQgaKwEfo
4) Introducing Sri Sanjay Subramaniam and Sri O.S.Arun
http://www.youtube.com/watch?v=ILraSJ1xgzA