Ramin Djawadi’s ‘Game of Thrones’ score to tour North America

The sounds of Westeros are coming to North America.

A 28-city tour will begin in February and feature live orchestral performances of the “Game of Thrones” score. Event planners promise a 360-degree stage, LED screens and special designs that aim to take fans on an immersive visual and musical journey through the kingdoms of Westeros.

The trek will come to Los Angeles on March 23 with a date at the Forum.

Early Monday, hundreds of eager “Game of Thrones” fans stood in line at the Hollywood Palladium for a special live concert announcement, one that featured the HBO show’s composer, Ramin Djawadi, and actor Isaac Hempstead Wright, who plays Bran Stark.

While devoted fans wearing black “Music Is Coming” shirts waited outside, the first surprise was a performance by the USC marching band. The band, playing the familiar tunes from the “Game of Thrones” soundtrack, began on Sunset Boulevard and marched to the Palladium parking lot.

Djawadi and Wright then took the stage along with Live Nation executive Omar Al-Joulani to share the anticipated but not-so-secret news. Word of the event and tour had trickled out last week.

After the announcement, a 32-piece orchestra performed segments from the “Game of Thrones” soundtrack, including the HBO show’s theme song.

Djawadi said the story line was the key factor when it came to writing the score.

“There’s so many characters in the show, and there’s so much drama and plot, that — season by season— we kind of expand on it,” Djawadi told The Times. “We just let the plot lead us in terms of when we decide, ‘OK, now this character should have its own theme,’ or ‘This is really part of the house theme.’ The story is guiding us.”

Since the power dynamics in “Game of Thrones” are constantly shifting, new music is written each season.

“Theon, for example, didn’t even have a theme in Season 1, and then in Season 2 he broke out and did his own thing, so we gave him a theme,” Djawadi added. “Daenerys’ theme we planted very early on in the first episode, but it didn’t draw that much attention to it … then toward the end when the dragons hatched, the big finale was her big piece.”

Because he doesn’t know the story details of the Emmy-winning show’s upcoming season, Djawadi is waiting in anticipation.

“I don’t know where the story is taking us, and I’m very excited to see what happens next,” he said. “I love all the surprises in it. I can’t wait.”

Tickets for the tour go on sale Aug. 13 at LiveNation.com.

Follow me on Twitter @SusieSchmank

Susie.Schmank@latimes.com