When Fitz and the Tantrums let loose live, the crowd needs to be on its toes. The band relies on its fans to be part of the show.

With people raising their voices and jolting their bodies to the band’s self-described “soul-influenced indie pop,” the six-member group will also rise to the occasion and deliver a memorable show.

“Our live show is our everything, our calling card,” bassist Joseph Karnes said over the phone from Los Angeles two weeks ago. “The crowd is the seventh member of the band.”

Karnes, 44, added that it’s a cathartic experience for everyone in the venue and the music lets people escape their day-to-day trappings and enjoy their night out.

Fitz and the Tantrums will unleash its energy on Saturday night as part of the Marymoor Park Concert Series presented by Swedish Redmond and in conjunction with Chomp! The Get Right Back Summer Tour stop will begin at 6:45 p.m. and feature opener Pickwick and Phases. For ticket information, visit www.marymoorconcerts.com.

The band’s self-titled third album was released June 10 and reached No. 17 on the Billboard Top 200 chart. Fans got a taste of new material when the infectious lead single “HandClap” bounced into circulation in March.

“It’s good to have some new music to play live. We’ve been on the road so long,” said Karnes, noting that the band — which formed in 2008 — played live supporting its second album, “More Than Just a Dream,” for the last two years. That sophomore effort reached No. 26 on the Billboard Top 200, and its debut, “Pickin’ Up the Pieces,” reached No. 1 on the Billboard Heatseekers chart.

It took some waiting for the debut to rule the Heatseekers chart, but once it happened, the band was off and running.

“We’re still pinching ourselves to this day,” said Karnes, adding that it’s a gift that people spend their hard-earned money buying the band’s albums and going to its gigs.

When you’re a Fitz and the Tantrums fan, you’re treated as part of a massive extended family. During the songwriting process, the band is thinking about its fans and how the songs will translate live in front of a crowd. Karnes admits it can be daunting when the band members start a new endeavor, but they push the pressure out of the back of their minds and focus on writing the song at hand.

While in the studio, Karnes finds himself saying, “We can’t wait to sing this chorus with everybody. That will be a great moment.”