Themed “sounds as art museums”, the fourth issue of University & Art Museum mainly works on two dimensions. Firstly, it discusses the role of sound practice (also known as sound art), a category that is difficult to identify in contemporary arts, as it engages with art museums. Built on this discussion, a series of knowledge accumulation and academic exploration will be made. Secondly, the book hopes to answer the question concerning “sounds of art museums”. How can sounds, as an attitude and carrier of culture, become a possibility in public art museums in the context of contemporary culture? More specifically, how can we make sounds heard? Or what kind of sound should we make? Or, how to construct a diversified “public sound” domain with joint efforts?