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Humming Mississippi is a sonic sculpture by Derick Ostrenko and Jesse Allison that turns a section of the Mississippi River into a spectral musical performance. A LIDAR scan of the Mississippi River floor was used to mill 18 miles of riverbed into individual planks of wood. Small transducers attached to the back of each plank transform the board into a speaker colored by the individual characteristics of the wood. The audio composition is generated based off the contours of the river in addition to real time river data such as temperature, salt content and flow rate.