Two weeks before Derek Hough’s “Symphony of Dance” tour was scheduled to arrive at San Diego’s The Rady Shell at Jacobs Park in December, tragedy struck.

Hough’s wife and dance partner on the tour, Hayley Erbert, suffered a cranial hematoma during a live performance on Dec. 5 and underwent major brain surgery a few days later. The 60-city tour went on indefinite hiatus.

Fortunately, Erbert made a full recovery and is back dancing again — albeit with a pixie haircut as the result of her head being shaved for the craniotomy. The tour resumed April 14 and the postponed Rady Shell date will now take place this Sunday. Tickets are mostly sold out.

In an Instagram post on April 5, Erbert wrote of returning to the tour and dancing again: “What a blessing (and surprise) it is to be able to be back on stage dancing with my love after such a crazy past four months. My healing journey has been nothing short of extraordinary and being able to dance again is igniting my soul in all the ways; speeding up my recovery even more. I am so appreciative of the doctors who have supported me in my decision to dance again and my team of specialists that have been assembled to assure that my health and safety is priority. I cannot wait for you all to see this show! It was so meaningful when we opened last year and now, after everything that has happened, it is truly even more special.”

After the “Symphony of Dance” launched last September, Hough spoke with the New York Times about the ambitious project. Here are excerpts from that interview, which took place before Erbert’s injury.

In one week (last fall), Derek Hough visited five states as part of his 60-city concert tour “Symphony of Dance.”

After a show in Cincinnati, and a post-show ice bath, he flew to Los Angeles for 48 hours to appear on Jennifer Hudson’s talk show, rehearse a coming Disney holiday special and film an episode of “Dancing With the Stars,” the hit television ballroom and Latin dance competition that helped start his career 16 years ago. Then he flew to Michigan for the next show.

“I guess I’m just a glutton for punishment,” Hough said with a laugh during a video interview from Minneapolis. “I love the real-time interaction with audiences, where they see you on TV and then the next day, you’re in front of them live.”

Since his 2007 debut on “Stars” as a “pro” — a professional dance partner to an eclectic roster of celebrities with varying degrees of dance talent — audiences have had ample opportunity to see Hough on both screen and stage.

Derek Hough performs in his “Symphony of Dance” tour at the Stifel Theater in St. Louis, Nov. 5, 2023.

(Bryan Birks/For the New York Times.)

In addition to “Stars,” he appeared in Radio City Music Hall’s Spring Spectacular; on TV shows like “Nashville,” “High School Musical” and “Hairspray Live!”; and as a judge on Jennifer Lopez’s dance competition series, “World of Dance.”

That exposure has made Hough, 38, one of the country’s most visible dancers, and the rare performer who could headline a nationwide dance-centric tour that has sold out shows on both coasts and in the Midwest.

“He reminds me of Gene Kelly and Fred Astaire, the triple threats,” veteran choreographer Bruno Tonioli, a “Stars” judge, said, referring to dancers who sing and act as well. “What he does always has that universal appeal.”

Hough’s popularity reflects the unlikely and enduring success of “Stars,” now in its 32nd season. Part of the show’s allure is its approachability.

“Ballroom is one of the most accessible and relatable forms of dance for mass audiences,” said Conrad Green, an executive producer who is now the showrunner for “Stars.”

There was little mainstream representation of ballroom dance when Hough was a bullied child growing up outside Salt Lake City with four sisters.

He knew nothing of Kelly and Astaire but adored Michael Jackson. But there was a family connection to ballroom: His parents met on a college ballroom dance team. Hough’s mother enrolled him in dance classes “to keep me busy,” he said, which he resisted until he realized it meant he got to be with girls. And he soon became intrigued by ballroom’s ethos of partnership.

“There was something about the working together part that was really cool,” he said. “There was this interaction that’s deeper than just learning a routine by yourself.”

Ballroom competitions also allowed him to travel, so dance became “this vehicle to explore,” he said.

At first, that just meant Utah and neighboring states. That changed when he was 12. Derek and his sister Julianne had caught the attention of the internationally renowned ballroom champions Shirley and Corky Ballas, who frequently visited the dance studio where the siblings trained. When the Houghs’ parents split and home became a tumultuous place, the Ballases invited Derek and Julianne to live and train with them in London.

“I was just fascinated by this gift that this boy had,” said Shirley Ballas, now a judge on the British show “Strictly Come Dancing.”

But she also recognized what was lacking. “He just needed to learn discipline and the art of how to put it all together,” she said.

Bryan Birks for The New York Times

(BRYAN BIRKS/NYT)

In England, Hough trained in many styles of dance as well as acting and singing. But it was the competitive ballroom dance scene that grabbed him.

“I became obsessed,” he said, and spent hours a day isolating his torso and hips, extending a leg, or articulating a foot. He fixated on competitions. He recalled thinking: “‘How do I win? How do I get better?’”

He won a lot. Hough stayed in London for a decade pursuing opportunities, which included starring in “Footloose” in the West End in 2006.

Back in the United States, Julianne had entered the world of “Stars” and recruited him as a backup dancer on a live tour, which led to a guest appearance on the show, then an offer to join as a pro. He declined.

“In the ballroom community, we at first kind of snubbed it,” he said of “Stars.” “We were like, ‘This isn’t a good representation of our world.’ ”

But after watching his sister thrive on the show, he decided to give it a shot, appreciating its reach. When Hough arrived, in the fifth season, it was clear to Green that he was particularly well suited to the show.

“You have to be a charismatic performer, choreograph well and teach well,” Green said. “It helps if you have knowledge beyond ballroom and Latin dance. On all of those metrics, Derek was really good.”

Hough is a six-time “Stars” champion and three-time Emmy winner for his “Stars” choreography. Since 2020 he has been a judge on the show. As a pro, he was lauded as a supportive and savvy instructor.

As the Hough siblings’ profiles grew, Derek pitched an independent tour to producers — “a rock concert for dance.” He was rejected. And rejected again.

But the Houghs eventually found support and cobbled together a show whose popularity became their proof of concept. From 2014-17, they headlined three national tours.

“Symphony of Dance” is Hough’s second tour without his sister. It’s also his first self-funded tour and the first to co-star his new wife, Hayley Erbert, who has danced with him for nearly a decade, appears regularly on “Stars” and competed on “So You Think You Can Dance.”

The 90-minute revue, which features a live band and six ensemble dancers, is rooted in ballroom and Latin dance but also includes tap, hip-hop and contemporary works.

Music is Hough’s starting point (he used to be in a band), and he likened the development of the show to “creating an album.” The show’s soundtrack, some of which he sings, features a broad spectrum, including pop, rock and jazz standards with bespoke orchestrations.

Whereas in previous shows, Hough says, he leaned on more commercial music, he called “Symphony” “a much more theatrical show” that “allows space for the dancing to speak for itself.”

Hough credits “Stars” with creating a production template and knowledgeable audience for his shows. He also readily admits to emulating its flashy aesthetic, which is reflective of ballroom dance culture, if not always a part of it he embraced.

“I grew up covered in rhinestones,” he said, but turned away from the sparkle as his career progressed. Now, with “Symphony,” he’s embracing those roots, bedazzling his set and costumes. “I missed all the shiny stuff,” he said.

In addition to Hough’s choreography, “Symphony” includes contributions from 10 other dance makers.

“They create things that I would never even think about, or do movements that aren’t in my vocabulary,” Hough said.

If the element of partnership attracted Hough to ballroom dance in the first place, the group effort of this tour also reflects a further evolution in his approach.

“In the world where I grew up, everything was competition,” he said. “We were always like, ‘I am against you, I’m here to beat you.’ It was a very selfish world.”

Now, he said, his goal is to “bring everybody into the mix. Like, ‘I want to learn from you.’ ”

Entertaining an audience, whether live or on-screen, remains his motivating force. He noted a period of burnout in his professional life when “I didn’t want it anymore.” But then he began to see his “crazy schedule” of TV and touring as an artistic offering, rather than a burden.

“All of a sudden,” he said, “that empty tank just went to full.”

Derek Hough — ‘Symphony of Dance’

When: 7:30 Sunday

Where: The Rady Shell, 222 Marina Park Way, San Diego

Tickets: Limited availability

Online: theshell.org

Schaefer writes for The New York Times.