Here’s a nice Tanpura drone in a to practice your Hariprasad impression with;). Or the sarabande from the Bach Partita!

https://m.youtube.com/watch?v=QeNqENVQxS0

An here’s a fantastic video of Hariprasad playing with Zakir Hussain

https://m.youtube.com/watch?t=3340s&v=j8rOPNWanGo

Here’s an explanation of retroflex consonants such as those found in India(Dravidian) languages 

https://en.wikipedia.org/wiki/Retroflex_consonant

Here’s a chart for places of articulation

http://www.learnlanguagesonyourown.com/places-of-articulation.html


Lori Colter

Russian Dudes

Here’s Hariprasad in a minor pentatonic(acdeg)


At around 40:50 the double tonguing starts