Canadian singer Avril Lavigne, who has not been seen on stage for three years, sang at a Nickelback concert at the Greek Theatre in Los Angeles over the weekend.
Lavigne, 32, contracted Lyme Disease two years ago and said: ''To my fans. I just want to thank everyone for their patience as I work on putting together this new album. It's been a long recovery and I want to make sure that this is perfect for you guys!!
''You only deserve my best effort and that's what I'm going to deliver! I can't wait to share the new music I'm working on, I promise it'll be here before you know it!! Love you, Avril.'
She added: ''I will always continue to make it a priority to fight and raise awareness about Lyme Disease with the Avril Lavigne foundation.
"I'm really happy to announce that I am now working on new music and I will be releasing a new album in 2017. I can't wait to open up and share my heart with you! I'm excited for you guys to hear the new songs. It's going to be an amazing 2017!''