Quite recently the city council of Rotterdam has selected 7 public sites that should be transformed in the near future into spaces where people can relax and escape the urban hectic. One of these sites is a former train line, 6 meters above the ground, running from the city center to the northern suburbs. Central idea is that this former train line should become an ecologically justified park. In order to also make it sonically pleasant, the project management asked Michiel Huijsman (Soundtrackcity) and me to come up with some recommendations. The report, which contains also several audio files, can be found here (at the moment only in Dutch).