Riek was part of the cycle of Paivascapes #1 – Bianauralmedia, Portugal artist residences in late April and early May 2010. Part of the field work of this German sound artist consisted in recording silences in churches and chapels along the course of the Paiva river, corresponding to the section between Castro Daire and Nodar (the same section that the artist traveled on foot in the first stage of his residency). These recordings were a follow up of other churches' recordings made by the artist in Germany and in other European countries since 2004. (Luis Costa)