Avril Lavigne came back to the stage after her last performance in over a year.

The "Complicated" singer performed during the opening ceremony for the Special Olympics World Games in Los Angeles on Saturday.

The 30-year-old has been diagnosed with Lyme Disease in 2014 and publicly announced her battle in June. She recently debuted her newest single "Fly".

The singer shared a photo of herself singing at the Special Olympics on Instagram. "Honored to have performed my song Fly at the opening ceremony for the Special Olympics tonight," Lavigne captioned the photo. "This was a very beautiful night for me."

The ceremony kicked off with a speech from Michelle Obama. Other performers included Cassadee Pope and Becky G. The games involved 25 different sports, all competed by intellectually disabled athletes.

Lavigne wrote "Fly" for other people having troubles. "I wrote this song to encourage people who are facing challenges, to encourage strength and to empower," Lavigne stated under her picture.

"It has been a difficult year fighting through Lyme Disease for me and I am so happy to have made it on stage tonight for the first performance in a year," she added.

"I'm a very private person," she told People Magazine. "But I can't just sit here and do nothing. I want to help people, and the first thing is bringing more awareness to Lyme disease … People don't really talk about the disease, and help can be minuscule."

Due to the disease, Lavigne had to step away from her music career. However, she created the Avril Lavigne Foundation and brought awareness to her illness through her new single.

Credit: INFphoto
Photo via Instagram from Avril Lavigne