On Monday afternoon in Tinley Park, tech, sound and lighting personnel were busy putting together one of the largest concert tours to hit the world's stages.
The concert? Paul McCartney's "One On One" tour. The crew was in town a day early to prepare for the beloved Beatle's shows Tuesday and Wednesday at Tinley Park's Hollywood Casino Amphitheatre.
"We'll be recreating the stadium show here," said Mark Spring, McCartney's production manager. Spring said because of Hollywood Casino Amphitheatre's size, the stadium-style show will fit perfectly in the venue.
"It's going to look good," he said as he surveyed the outdoor theater, which sports an expansive lawn. The theater seats about 28,000 people.
Spring, who's worked with McCartney for 15 years, said the musical legend has the final say on everything about the concert.
"How the show looks is all him. He sits down and decides (what he wants)," Spring said. He said McCartney also will come out on stage prior to the show and check certain technical aspects, such as lighting and sound.
"All I do is put up the show," Spring said.
On Monday afternoon, trucks already were parked at the theater as equipment was being unloaded. Spring said 24 trucks transport equipment and all other items for the concert.
"They're brought in by Upstaging, which is a local Chicago company," Spring said.
What can audience members expect from McCartney's current show when it comes to technical matters?
"This one is much bigger. There are bigger video screens, bigger sound and bigger special effects," he said.
Large LED video screens star on both sides of the stage and there also will be the addition of screens on the lawn for the Tinley Park show. McCartney's concert features state of the art multimedia technology. The pyrotechnics audiences are used to seeing in any McCartney production, namely during his performance of "Live and Let Die," are also impressive.
Spring, who's been to the Tinley Park venue many times in previous years with other artists' shows, said it's interesting to help build the McCartney show for Chicago-area fans.
"Putting on a stadium show outdoors is fun. And it's the right thing to do here," he said.
The former Beatle will rock the venue with a blend of Beatles hits, Wings favorites and solo McCartney tunes at Hollywood Casino Amphitheatre.