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Avril Lavigne

Michael Tran/FilmMagic

Welcome back to the stage, Avril Lavigne!

In her first concert performance in more than a year, the 30-year-old appeared at the Opening Ceremony of the 2015 Special Olympics World Games Saturday night to sing her latest track "Fly."

As the torch was lit to officially begin the games, Lavigne appeared onstage in a sparkling alice + olivia dress to perform her inspiring single that benefits the games. 

"I just sang FLY on stage for the FIRST time ALL THE WAY THROUGH live tonight in rehearsal," she wrote on Instagram Friday. "Making what feels like the impossible possible......Fighting through Lyme Disease. ‘Just Reach Up Don't Give Up' so happy to be working with the Special Olympics LA 2015. Grateful."

While the performance was all for a special cause, it clearly marks a powerful milestone for Lavigne who has been recovering from Lyme disease.

After getting diagnosed shortly after her 30th birthday last October, the "Sk8er Boi" crooner became bedridden. But with support from family and friends, the singer was able to recover at an impressive rate.

"Honestly, I felt very, very loved," she told Good Morning America. "And it sounds silly saying it, but I really truly did feel my fans through the process."

She added, "For me, it's like a second shot at life. I really just want to go out there and truly do what I love so I'm so excited for life after this."

Avril Lavigne, Special Olympics


As for her latest single that was heard at the Los Angeles Memorial Coliseum, Lavigne hopes that it can leave many inspired.

"I wanted the athletes to be the stars of the video and, just like the message of the song, to show the world that they can overcome the challenges and that everyone is meant to shine," she shared. "It's just about inner strength and courage. This song took on a whole new meaning for me while I was sick, which was pretty magical."

First lady Michelle Obama,Eva Longoria, Colin Farrell,Justin Bieber, Michael Phelps, Robin Roberts, E! News' very own Maria Menounos, Cody Simpson, Maria ShriverStevie Wonder and others were also in attendance to support Saturday's opening ceremony.