Emeli Sande, Rizzle Kicks and Labrinth are among the stars who will perform at a concert in memory of murdered teenager Stephen Lawrence, 20 years after he was stabbed to death.
The event - to be staged at London's O2 Arena - will raise funds for a trust set up in his name to help young people from disadvantaged backgrounds.
Emeli performed for around 100 people including schoolchildren at a launch event at London's Abbey Road studios, which also included the Rizzle Kicks and was attended by Stephen's mother, Doreen Lawrence
Multi-award winning Scottish singer Emeli said that Stephen Lawrence's murder and Mrs Lawrence's subsequent campaigning had had a big impact on her family.
"I was quite young when it happened but coming from a mixed-race family it was a big issue that we spoke about, and (we also spoke about) the issues you face being mixed race and this being something that happened in our country.
"It had a big impact on my family and all the work Doreen has done has felt very empowering - that you can speak out about these things and changes can be made if you are brave enough to stand up."
Stephen was 18 when he was stabbed in a racist attack in Eltham, south east London, in April 1993. Two men - Gary Dobson and David Norris - were found guilty of the murder last year and the police investigation still remains "live".
The Metropolitan Police were criticised for their handling of the initial investigation and, as a result, the force was judged to be institutionally racist in a subsequent public inquiry.
The show, Unity: A Concert For Stephen Lawrence, has been backed by London Mayor Boris Johnson. Artists also include Rudimental and Soul II Soul. Tickets will go on sale on Friday at www.aeglive.co.uk.