How many movies have Maaya Sakamoto and Ryuichi Baba collaborated on?

They have worked on 1 movie together! Their first movie together was Gunbuster vs Diebuster: Aim for the Top! The GATTAI!! Movie (2006) and was their highest rated movie together. They have not worked together since Gunbuster vs Diebuster: Aim for the Top! The GATTAI!! Movie (2006).