The concert on August 3 was an entirely electronic composition by BJ Nilsen and Zeno van den Broek . During the concert on 1 June, composer and sound artist Zeno van den Broek used the so-called "Lucier method" to track down the natural frequencies of the Oude Kerk. The building blocks were the sound of the transept organ and the amplified sound of the bells in the tower of the Oude Kerk. A composition of 4 minutes was played, recorded, simultaneously recorded and played again, up to 13 times. Thus the acoustic sound changed into increasingly abstract resonances that are in harmony with the architecture of the church. The church "spoke" back, and the recorded sounds fused with the acoustics. Together with Swedish composer and sound artist BJ Nilsen, Zeno van den Broek worked on a new composition, in which the surface sound of the bells were amplified in the church space, and indoor and outdoor spaces were merged.