Acoustic tests focused on finding the natural frequencies of the Oude Kerk were executed in the week before and were translated into a live performance. Zeno van den Broek based his work on a method made famous by Alvin Lucier with his composition 'I Am Sitting In a Room' (1969), in which Lucier performed and recorded a text, played it back, recording it again and again, until it was abstracted by the natural frequencies of the room. This ‘Lucier-method’ was used in the Oude Kerk, to find the natural frequencies of the church building. Instead of text, Zeno van den Broek used the sounds that are inseparable from the church: the transept -organ and amplified bells. The performance resulted in these natural sounds evolving during the passing of this morning event into more and more abstract resonances, in tune with the architecture of the church.