AllMusic’s Thomas Erlewine sums up Browne’s influence nicely at the beginning of his profile of Browne at AllMusic:
In many ways, Jackson Browne was the quintessential sensitive California singer/songwriter of the early ’70s. Only Joni Mitchell and James Taylor ranked alongside him in terms of influence, but neither artist tapped into the post-’60s Zeitgeist like Browne. While the majority of his classic ’70s work was unflinchingly personal, it nevertheless provided a touchstone for a generation of maturing baby boomers coming to terms with adulthood. Not only did his introspective, literate lyrics strike a nerve, but his laid-back folk-rock set the template for much of the music to come out of California during the ’70s.
The next part of Browne’s life is his performing career. He backed other performers and eventually joined The Nitty Gritty Dirt Band. He only was in the group for a few months, but the band recorded several of his songs. He became a solo artist and sang new songs and those that he had written for others. (It’s safe to say that not too many people cover songs that they had written.)
The next important element of Jackson’s career is his activism. The section of his Wikipedia profile devoted to the causes he has backed, the benefits he has performed and the organizations in which he has participated is as long as the section about his music. If one issue stands out, it is his activism against nuclear energy.
Above is the “The Load Out/Stay” and below is “Your Bright Baby Blues.”