Hurwitz said early versions of the film included the overture and then "Another Day of Sun," which was two big music pieces at the beginning of the movie. "We knew one of them had to go," he said.
A version that included the overture as the first number was screened for months before the filmmakers decided the elaborate dance number should open the film.
"Losing one of them was very difficult," the composer said.
Hurwitz said audiences would also hear an additional new piece of music — which joins together several key melodies — at the start of the second half of the show. Hurwitz, who won two Academy Awards for his work on the movie's music, is conducting the live shows Friday and Saturday, May 26 and 27, at the Hollywood Bowl. The tour's stop at Usana Amphitheatre in West Valley City is among more than 50 performances that will follow in the U.S. and internationally.
The show will include a 100-piece symphony orchestra, choir and jazz ensemble, along with the film's original vocal recordings from Gosling, Stone and John Legend. The movie will play along while the musicians perform.
"There's a lot of melody spread across the orchestra — that's kind of the way I arrange. So to get to see all of those wind players and brass players really carry melodies and carry real musical moments of the score, it's something that I had the pleasure of seeing in the studio, and I'm excited for people to see it live," Hurwitz said.
It may not be the only live performance in "La La Land's" future. Producer Jordan Horowitz said he's hoping for a "La La Land" Broadway stage show.
"The picture was conceived as a film musical. And I think we need to figure out if there is a version of it that can live authentically as a stage musical," Horowitz said. "The songs are at this point relatively indelible. They really resonated. So one would hope that we could do that."