When asked what sort of person he was offstage, Jagger remarked, "about half as egotistical."

Dispersed throughout the interviews are concert footage of entire performances of other early Stones hits such as "Time Is on My Side" and "The Last Time."

"I don't really know what I am on stage," Jagger continued. "It's very different because you have to treat everybody differently. You have to be very, very, very egotistical because that's -- I mean, you're acting. You're doing an act for them. It's not really you."

Jagger also said that when the band's first record hit the charts, he was convinced that The Rolling Stones would "probably be around for a year or maybe a year and a half, and then it's all going to be over."

Rocking the Irish countryside

The band can also be seen traveling through the Irish countryside in a train car ordering tea with "lots of sugar," being mobbed by fans, hanging out backstage and tinkering with songs in shabby hotel rooms. Jagger and Richards were in the midst of writing "Sittin' on a Fence" in one scene. That song wasn't formally recorded for another three months.

Although the band was still finding its musical footing at the time, Jagger's disdain for the pop music of his own youth provides a glimpse into what was to become of the band.

"Popular music wasn't a real thing at all," said Jagger. "It was very, very romantic" with lyrics "about things that don't really happen ... very few of them actually mean anything or have any relation to what people are doing. ... They were just about being unhappy because your girl had left you, or being happy because you just met somebody. That's all they were about about. The moon in June and the sky is blue, I love you."

Jagger also talked about 1960s society and how the times, they were a-changin'.

"In the last two or three years," he said, "young people have been -- this especially applies to America -- instead of just carrying on the way their parents told them to, they've started a big thing where they're anti-war and they love everybody and their sexual lives have become freer. The kids are looking for something else, some different moral value because they know they're gonna get all the things that were thought impossible 50 years ago. A whole sort of basis of society and values which were accepted could be changed, but it's up to them to carry on those ideals that they have instead of just falling into the same old routine that their parents have fallen into. So it's not until the people of 21 now reach the age of 75 -- those kids actually have to be grandfathers before the whole thing is changed."

In one of the most entertaining parts of the film, Jagger and Richards sing the tunes of their rivals -- The Beatles' "Eight Days a Week" and "I've Just Seen a Face." Jagger also does an impressive Elvis Presley impersonation.

What they wanted to be when they grew up

Toward the end of the film, some of the band mates talked about their post-rock 'n roll life plans. Jones said he always wanted to be a filmmaker, Jagger considered going back to college, and Watts planned to go back to his former career as a graphic designer. But as it turned out, the Stones did not fade away.

Incidentally, the film's title is a reference to Watts.

"His was the personality that everyone felt was the most endearing -- and cinematic," said Gochanour.

Gochanour also explained the differences between the 1965 and 2012 versions of "Charlie is My Darling." He said he tried to "give the audience a sense of what it was like to be at one of the shows when the band was just coming into their own. I was also trying to show the early effects of fame and notoriety -- and foreshadow the future."

Peter Whitehead's 35-minute 1965 version, on the other hand, is more of an exploration of the band mates' differing personalities.

Gochanour, however, retained the original title because of the film's cult status among Stones fans. He and Klein distinguished this new, 67-minute version by version by adding "Ireland 1965" to the name; thus the new release is formally titled "Charlie is My Darling: Ireland 1965."

As The Rolling Stones celebrate the half-century mark as a band, a rare look at its members when they hadn't yet hit the quarter-century mark as people really puts their resonating success in perspective.

At one point, the interviewer asked Jagger what the secret to his success was.