DAVID CROSBY

Half a century ago, Crosby, Stills, Nash & Young released one of the greatest albums of the rock era. But the friendships did not endure. Crosby, Stills and Nash talk about their shared history, as "Déjà Vu" gets a delayed 50th-anniversary expanded release.

(Lori Stoll via AP)LOS ANGELES – Tom Petty once described him as one of rock music's most well-kept secrets, and Chris Hillman is fine with that. It was never about getting into the Rock and Roll Hall of Fame, either, although Hillman, McGuinn and their fellow Byrds are there, too. "I was just having so much fun.”That passion is revealed in his just-published memoir “Time Between: My Life as a Byrd, Burrito Brother, and Beyond." After moving on to another bluegrass ensemble he returned to Los Angeles, where he'd pick up the bass guitar this time and join the Byrds. He recently took part in a “car concert” at the Ventura County Fairgrounds but says that just wasn't the same.

These are just a few of the 400,000 arguments you'll hear chasing the legacy of Woodstock. "He immediately walks in to the mud," Crosby continued. If the voices in those harmonies can't live conflict-free, what hope is there for the rest of us? "Those four guys were in conflict long before Woodstock and long after Woodstock," Crosby replied. That's hope," said Ercoline.