Ryan Lewis puts it nicely: “It’s rock and roll, not rocket science.” His back-from-the-grave band The Agenda exists by this sentiment.

Frontman Justin Robinson said that the group actually started off as an “electronic punk garage” band. “Whatever that means,” he said. “The Faint was popular, and I said I wanted to do that, but with more of the latter.”

But electronic instruments come with their disadvantages.

“Some bands can do it with a drum machine,” Lewis said. “But you can’t jump on a drum machine and knock it over.”

This refers to their AthFest reunion show at Cine, where drummer and Lewis’s brother Mat continued to blast away at his drums although half of his set rolled away from him. When a band can cherish their mistakes as part of their performance, they have something special to give an audience.

The Agenda has always really been about having fun in a messy, loud way. The group began in 2001 at the underground venue The Ultramod Compound which had at one time been an auto shop and a brothel.

“We were putting flyers up all over town, competing with other bands for word-of-mouth. There was an article about us before we had even played a show,” Robinson said.

The band attended South by Southwest in 2002 with only five songs written and two covers. They cut an album, “Start the Panic,” and went to England twice in 2003 for the Redding and Leeds Music Festivals. In 2004, they broke up and five years later, they’re back.

The band’s bond of friendship is visible on stage, a trait that dates back to their early days before the break-up. What has changed is the way the band feels about itself.

“It’s not worth trying to be a successful band,” Lewis said. “We had a plan back then, but now it’s just about having fun, which is probably the way we should have been.”

But The Agenda has a steadfast intensity about their music that is palpable. The music they are making now is set to get the crowd moving and invoke the sort of punk spirit some may never knew they had.

“There’s this one new song, it’s called ‘Only the Young Die Young,” and it’s awesome. It’s like an anthem,” Robinson said. “We played it in Augusta and these kids were pumping their firsts, it was kind of shocking. We were like, whoa, look at this.”