Crosby Stills Nash & Young

"The best thing that ever happened to CSN was Neil, and the worst thing that ever happened to CSN was Neil."

"At this point, it's not about would we get together," he says. "Should we, is the important question."

Fillmore East performance arrived a little more than a month after their famous Woodstock appearance.

Defining folk rock is a paradoxical task, to say the least.

He wrote "I Watched It All Come Down" to express his regret they didn't do more together.

"His legacy will continue to live on through his legendary music," Crosby's wife said in a statement.

Singer admits his actions "pretty much destroyed" the group.

"Stephen [Stills] and Neil [Young] and I are great," Nash told 'CBS Sunday Morning.' "We talk often. We don't talk to David."

He knew how much he’d earned from colleague’s talent, so handed over lyric sheets “with a good heart.”