Michael Buble has pulled out of performing at the BBC Music Awards just days after announcing his three-year-old son Noah has been diagnosed with cancer.
Buble said he and his wife, Luisiana Lopilato, had put their careers on hold in order to devote their time to taking care of their little boy.
The Canadian singer was due to perform at the awards at the ExCel London on December 12 alongside Kaiser Chiefs, Emeli Sande and Lukas Graham.
The show will be hosted by Fearne Cotton and Claudia Winkleman.
Steve Wright announced Buble's withdrawal from the concert on his BBC Radio 2 show.
Bob Shennan, director of BBC Music, said: "We send Michael and his family our very best wishes."
In a statement on Friday, Buble, 41, said: "We are devastated about the recent cancer diagnosis of our oldest son Noah, who is currently undergoing treatment in the US.
"We have always been very vocal about the importance of family and the love we have for our children. Luisana and I have put our careers on hold in order to devote all our time and attention to helping Noah get well. At this difficult time, we ask only for your prayers and respect for our privacy.
"We have a long journey in front of us and hope that with the support of family, friends and fans around the world, we will win this battle, God willing."
Buble and Argentine model and actress Lopilato, 29, are also parents to nine-month-old son Elias.