You may know this, in which case I misunderstood your point, but this site is a LONG way from the Indus valley.
Post#8, my apologies to MK...
http://www.youtube.com/watch?v=Z0NIWMFE0EQ Carnatic music ~ this is where it’s from. The one I am referencing is called a MORNING RAGA praising Krishna. This is an excerpt from a movie. If the Wheel of Life should turn and you end up in India there are many worse places to arrive than a Carnatic musical event ~ this style is known as “Scat Music” in America. If you followed the Rat Pack in Vegas they had several guys who could do this as well as any Indian.
Karnataka in south-western India is right now Dravidian. It had some ARyans (Konkani-speakers) moving in to their west coasts around 1500 to 1000 years ago. In 1500 BC there were no Aryans there and most likely not even Dravidian but might have been related to the bhil tribals (Austroloid peoples)