The police say up-and-coming Bronx rapper Kay Flock walked into a Harlem barbershop last December and shot an opp to death.

Surveillance video suggests the situation was much more complicated and Flock wasn't the aggressor.

Kay, who's facing murder charges, will have strong legal representation when he argues his case in court.

Famed defense attorney Jeffrey Lichtman will be by the 18-year old's side.

Litchman defended El Chapo (who lost) and John Gotti Jr. (who won) among others.

"Very happy and honored to be representing [Kay Flock] on the most serious of cases," Lichtman wrote. "A very talented kid, I'm looking forward to winning his trial. When the facts come out I think people will be shocked he was even charged."

Kay is currently in Rikers.