David Bowie, Sade, Nas and Damian Marley are just some of the big name artists that could feature in a concert in memory of people who died in police custody.
The star acts were some of the names mentioned by Merlin Emmanuel - the nephew of popular reggae star Smiley Culture who died during a police raid - at a rally on Saturday.
He told the Streatham Guardian: “We are in talks with Nas, Sade, David Bowie, Jessie J and others. I actually have a meeting tomorrow (Tuesday) to decide on the venue and date.”
Hundreds of people joined the march from Wandsworth Road to New Scotland Yard via Parliament Square demanding “justice” for the 48-year-old, real name David Emmanuel, who died last month while police were searching his home.
The 80s reggae star, who grew up in Tulse Hill, died of a single stab wound to the heart in the kitchen of his home in Warlingham on March 15.
The star, best known for his Cockney Translation single, allegedly plunged a carving knife into his chest when he went to make himself a cup of tea during a police drug raid on his home.
He was on bail for conspiracy to supply cocaine at the time.
But friends and family organised the march after questioning the circumstances of his death. The Independent Police Complaints Commission is carrying out an inquiry.
March organisers have said the protest is also to honour more than 400 other people who have died in police custody.
Merlin Emmanuel led the protest alongside social justice campaigner Lee Jasper and other family members of those who died in police custody.
He said: "I'm feeling militant. I'm feeling as good as I can under the circumstances. It's good to see the support of the community here and this is just the beginning."
Mr Emmanuel unveiled plans to deliver a petition to Number 10 Downing Street, asking any officers who had somebody die in their custody to be suspended immediately and be subject to a lie detector test, for members of the IPCC to have never worked for the police before and for officers to film arrests with mobile recording devices.
Police have said there were no incidents and no arrests during the march.