Fans of John Green’s bestseller “The Fault in Our Stars” received a special treat Wednesday night when the cast of the upcoming movie joined select soundtrack artists for a live-streamed event.

“The Fault in Our Stars Live Stream Event at YouTube Space LA” celebrated with a concert and Q&A featuring Shailene Woodley, Ansel Elgort and Nat Wolff. Ed Sheeran, Charli XCX and Grouplove performed their songs from the pic, with Sheeran performing “All of the Stars” for the first time.

But with such an incredible fan base, Green was a little worried at first about adapting the book for the big screen.

“I was hesitant to sell the rights in the first place,” Green said. “But the people who made this movie have been faithful to the themes, they’ve been faithful to the tone of the book, and I think for me at least that’s what makes the movie so special.”

The film’s producer, Wyck Godfrey, is no stranger to book adaptations. Having worked on the “Twilight” franchise, Godfrey understands the importance of staying true to books and their fans.

“At the end of the day you just want to pay honor to the characters and the world that he created,” Godfrey said.

During the Q&A the cast discussed everything from what the characters and book mean to them to their side careers as DJs, but they all agreed that living life to the fullest is most important.

“The biggest thing is about enjoying what’s in front of you and appreciating every moment you have,” Elgort said.

“The one thing that I learned from Hazel is that at 16 years old she recognized and realized that it’s not about who remembers you in life,” Woodley said. “[Hazel] sees her own colors and drives her life with those.”

This isn’t the first time Woodley and Elgort have worked together. The duo recently played siblings in “Divergent” earlier this year, which is vastly different from the very-much-in-love couple they play in TFIOS. The situation lends itself to many jokes from the cast, but as actors they know how to adapt to each role.

“Like I’ve always said I’ve always wondered what it would be like to make out with my brother,” Woodley joked.

But Elgort answered a little more seriously, saying, “Playing Gus and Hazel we’re best friends and lovers, so we have to be really comfortable with each other.”

Fox’s “The Fault in Our Stars” bows June 6.