Director Andrew Slater’s documentary Echo in the Canyon starts off with Jakob Dylan asking Tom Petty who to properly pronounce the Rickenbacker guitar. It’s an amusing opener, as Petty strums a bit before jokingly tells the viewer that the rest will cost too much. Actually, Echo in the Canyon is a priceless and value added look at the merging of folk and rock, a blend that was honed and crafted up in the hills of Laurel Canyon, California. Petty, who passed in 2017, was a fan of that era, and he is just one of the many reasons to check out the documentary.