After up-and-coming singer-songwriter Nic Cowan got the packed crowd warmed up on Sunday night, reggae music filled the air at the Verizon Ampitheater in what seemed the perfect lead-in to the eclectic mix of music that characterizes the Zac Brown Band's albums.

The band emerged as a curtain dropped before them, immediately launching into a powerful rendition of their hit “Keep Me in Mind.” In a style that seemed perfectly fitting for the mellow, southern-rock meets country meets reggae-inspired band, they spoke little to the crowd before moving into “Whiskey's Gone,” which appeared on the "True Blood" soundtrack prior to its commercial release.

As Zac Brown adjusted his signature beanie to loud cheers by the audience, the band launched into their summer hit “Knee Deep,” bringing the crowded outdoor audience to their feet as they sang along to the song recorded with Jimmy Buffett.

The band continued with new song “Uncaged” as well as “As She's Walking Away,” which won a Grammy in 2011 for Best Country Collaboration (with Alan Jackson).

In what seemed to be the theme of the night, the band continued to create a perfect blend of heartfelt ballads and self-proclaimed “barn burners” as they launched into “It's Not Okay” with bassist John Driskell Hopkins performing the almost rap-like verses as Zac Brown chimed in to sing the chorus.

The set list continued with a tribute to Stevie Wonder as the band performed the opening lines of “Isn't She Lovely” to lead into a cover of John Mayer's “Neon,” which featured a rousing violin solo by Jimmy De Martini before closing out with the iconic Stevie Wonder lyrics once again.

As the band finished their emotional “Highway 20 Ride,” Zac Brown took to the mic to speak about Camp Southern Ground, a cause close to his heart.

“Part of the reason I'm on this earth is to build this kids' camp I'm working on in Georgia,” said Brown, “to help kids with developmental disorders.”

As the crowd cheered in support of the cause, the band amped up the energy level once again with “Quiet Your Mind” followed by new song “The Wind” and the fan-favorite hit “Ain't In No Hurry.”

The band took a break as a video montage showed their experiences over the past few months, including a trip to the Academy of Country Music Awards where they hosted the “Fan Jam” event, as well as the Houston Rodeo, the band goofing around on their tour bus, and a featured “Fan of the Month.”

As the stage went black the opening chords of “Who Knows” brought the audience back to their feet and the stage appeared to reveal the members of the band suspended over the stage. The band then launched into a guitar jam session that lasted almost five minutes before breaking into their hugely popular beach-inspired drinking song “Toes,” which the audience joined in on to sing parts of the chorus.

The band continued with their somewhat strange yet irresistibly catchy “Sic 'Em On A Chicken,” before introducing Zac's self-described autobiographical number off their coming album, “The Day That I Die.”

Yet another violin solo opened an extended version of the hit single “Free,” followed by an interactive performance of “Jump Right In,” a summertime song written with Jason Mraz.

The band closed the body of their set with a scorching rendition of Charlie Daniels's “Devil Went Down To Georgia” then disappeared as the stage went black and the crowd began to chant for an encore.

Drummers Daniel de los Reyes and Chris Fryar launched into a drum solo to kick off the encore, with the remainder of the band returning to cover the Marshall Tucker Band's popular “Can't You See” as well as Aerosmith's “Sweet Emotion.”

They closed the evening with a heartfelt version of their hit “Colder Weather,” as the audience heavily populated by couples swayed together to stay warm in what really was becoming a colder evening.

The band finally brought the evening to a close with a rousing rendition of “America the Beautiful” parlayed into “Chicken Fried,” the single that made them famous. Amidst chants of “USA,” Zac Brown introduced the other members and thanked the audience for coming out to what truly was a memorable night in Irvine.