How many movies have Rob Houchen and Stephen Sondheim collaborated on?

They have worked on 3 movies together! Their first movie together was Kings of Broadway 2020: A Celebration of the Music of Jule Styne, Jerry Herman, and Stephen Sondheim (2020) while their highest rated movie together was Marry Me a Little (2020). They have not worked together since Stephen Sondheim's Old Friends (2022).