“The Cosby Show” alum Keshia Knight Pulliam paid tribute to her former co-star Malcolm-Jamal Warner after his death at age 54 with a touching social media post on Sunday. Knight Pulliam, 46, shared an Instagram video of Warner playing bass guitar onstage for a live audience at City Winery in Atlanta.

Malcolm-Jamal Warner, best known for playing Bill Cosby's son on the hit NBC sitcom The Cosby Show, has died at the age of 54, in an accidental drowning while on holiday with his family in Central America.