You are standing in the middle of the California desert, right out in the Joshua Tree National Monument. The sun is just baking the scrub brush. The sky is that endless stark blue.

He wanted it to be a massive double album history of American popular music. It was going to start with bluegrass, move chronologically through country, jazz, R &B, rock, and literally end with futuristic synthesizers and electronic music. That is a very late 60s psychedelic, heady concept. But Graham Parsons gets in the room and just starts talking.

• Today's Deep Dive is a story -driven profile of a musician who died at just 26 years old
• He never had a massive commercial hit during his entire lifetime not one yet
• He fundamentally changed the trajectory of American music You might not know his name, but you absolutely know the s ...