Marshall may be a drama, but that doesn’t mean there can’t be some fun on set.

While filming the biopic about the U.S. Supreme Court’s first African-American justice Thurgood Marshall, actors Chadwick Boseman, Josh Gad, and Sterling K. Brown got together — still in costume — and sang a cover of Boyz II Men. The trio gave new life to “Motownphilly” in a three-part harmony that almost rivals the Boyz’s.

From director Reginald Hudlin, Marshall will track the titular lawyer (Boseman) in the early part of his career, including his work at the NAACP after World War II. Gad stars as Samuel Friedman, Marshall’s green law partner. Meanwhile, The People v. O.J. Simpson: American Crime Story standout Brown will play the man Marshall and Friedman will have to defend.