Tanner Springs Park is northwest of downtown Portland, near highways, train stations, and the Willamette River, surrounded by trams for three sides and low-to- high rise residential buildings around four sides. The theme of the park is its wetland history, revealing the scene once alive from the past. Guided by Portland-based composer Yuan-Chen Li, this Soundwalk imagines the process of sedimentation for the participants. Sporadically accompanied by the composer’s “musical signage,” the 40-minute guided promenade brings the participants to understand the turbulent sound of traffic activity, the harmony of singing water and raindrops, ending in the joyful discovery and exploration of one’s inner space interacting with different materials built for the park.