How many movies have Jo Seok and Kim Hyun-Soo collaborated on?

They have worked on 3 movies together! Their first movie together was The Sound of Your Heart Special 1 (2018) and was their highest rated movie together. They have not worked together since 마음의 소리 스페셜 3 - 붕어빵 부자 (2019). They are most known for their comedy films together.