"I was shocked to see people dressing so flamboyantly. They were all stoned. To me, it was a new world," Shankar told Rolling Stone of the Monterey festival.
While he enjoyed Otis Redding and the Mamas and the Papas at the festival, he was horrified when Hendrix lit his guitar on fire.
"That was too much for me. In our culture, we have such respect for musical instruments, they are like part of God," he said.
In 1971, moved by the plight of millions of refugees fleeing into India to escape the war in Bangladesh, Shankar reached out to Harrison to see what they could do to help.
In what Shankar later described as "one of the most moving and intense musical experiences of the century," the pair organized two benefit concerts at Madison Square Garden that included Eric Clapton, Bob Dylan and Ringo Starr.
The concert, which spawned an album and a film, raised millions of dollars for UNICEF and inspired other rock benefits, including the 1985 Live Aid concert to raise funds for famine relief in Ethiopia and the 2010 Hope For Haiti Now telethon.
Ravindra Shankar Chowdhury was born April 7, 1920, in the Indian city of Varanasi.
At the age of 10, he moved to Paris to join the world famous dance troupe of his brother Uday. Over the next eight years, Shankar traveled with the troupe across Europe, America and Asia, and later credited his early immersion in foreign cultures with making him such an effective ambassador for Indian music.
During one tour, renowned musician Baba Allaudin Khan joined the troupe, took Shankar under his wing and eventually became his teacher through 7 1/2 years of isolated, rigorous study of the sitar.
"Khan told me you have to leave everything else and do one thing properly," Shankar told The Associated Press.