f(x): 4 Walls (2015) (movie): The song "4 Walls" by f(x) touches on the idea of love being like a mysterious maze - a concept that is often explored in their music. The lyrics describe how emotions are fleeting and perfect beginnings don't always last, with th... Discover the latest Discussions, Reviews, Quotes, Theories, Explanations and Analysis of f(x): 4 Walls (2015) below