Cullum and Bros singer Matt Goss took the stage to perform at the first annual Amy Winehouse Foundation Ball at London's The Dorchester hotel.
The foundation, created in the singer's memory after she passed away in 2011, has generated more than $368,000 (£230,000) for charitable causes in its first year of operation.
Winehouse's pal Tyler James, who was living with the tragic singer at the time of her death, also sang at the event, and stressed the importance of continuing the Amy Winehouse Foundation's good work.
He says, "I had alcohol problems in the past, I went to rehab, I'm lucky to be here. I was taught quite a lot about drugs in school, but no one really talked about the dangers of alcohol.
"I'm still grieving but something like this helps me because it's a really positive thing. She'd be so proud of her dad and her family (who are running the organisation). Amy was my soulmate, I think about her all the time. Part of me feels like she's still here."
Winehouse died from alcohol poisoning in July 2011.