I found this good inforgraphic in visual.ly that explains the basics and magical nuances of Hindustani or Indian Classical music framework created by Pratyush Gupta.

He explains “Music of India is said to be one of the oldest unbroken musical traditions in the world. The origins of this system go back to the Vedic Age. Many legends evolved about the origins and developmentof Indian classical music. Such stories show the importance of music in Indian culture”.