Mason Lieberman is a composer and cellist who has composed music for RWBY.
Mason Lieberman attended the Berklee College of Music (same as fellow RWBY composers Steve Goldshein and Alex Abraham) to study Film Score.
His first film score, Joe Lansdale's Christmas with the Dead, was recorded by a seventy-man orchestra and forty-man choir in Hobart, Tasmania. It has received critical acclaim at film festivals internationally.
On July 3rd, 2022, Mason Lieberman announced that he had returned to the RWBY franchise as the featured cello soloist of RWBY: Ice Queendom.