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“There is moonlight and moss in the trees, down the Seven Bridges road.” These are the lyrics to a line in The Eagles song “Seven Bridges Road.” This song is an excellent example of harmony making a song sound extraordinary because it has four distinct parts. All four parts together produce musical magic, but if you take some away or change parts, it ruins it. As in music, nature has a harmony that makes it all go together. A single part missing or out of place disrupts the whole system. John Madson lives in harmony with the Mississippi river, throughout Up on the River. Madson shows his love for the river and tells how he despises those who are cutting parts of the harmony and trying to change the melody of the river. Madson lives in harmony with the river because he is an environmentalist. He does this in many ways. Madson shows that he is an environmentalist when he describes “how walleyes are very sensitive to pollution and turbidity in the water” (140). His background as a biologist further supports this because in order to be a field biologist you have to love the field in which you work to do well. Madson loves to fish, and the fish are part of his field site, the Mississippi. His biological knowledge