“The income data sourced from the 2011 US Census corresponds to the number of instruments playing, from 3 to 30, and the strength of their sound. For example, the blaring 1:37 mark represents the median income of $205,192 between Park Place and Chambers Street in the Financial District, while the most subdued movement of the song at 3:53 is between East 180th Street and Bronx Park East, an area with a median income of $13,750.”