Despite a spate of promotion on social media, Usher was a no-show at Ariana Grande's One Love Manchester benefit concert on Sunday.
The "Yeah" singer was scheduled to join the star-studded show but never took the stage. Instead, he took to Instagram on Monday to explain his absence.
"So happy to see that last night's concert in Manchester proved that love always prevails," the "Voice" alum wrote. "I would have loved to be there but It was my son's first day at Camp Kudzu, one of the few summer camps for kids living with diabetes. This was an important day for him and for myself as a proud father. Stay strong UK."
The Grammy-winning crooner's son Usher V (a.ka. "Cinco") with ex-wife Tameka Foster was diagnosed with Type 1 diabetes in 2014 and the singer has been an advocate for a cure to the disease ever since.
Grande's concert featured performances by Justin Bieber, Coldplay, Miley Cyrus, Niall Horan, Katy Perry, Take That and Pharrell Williams as well as surprise appearances from Imogen Heap and Noel Gallagher.
