During development and recording of the album, the band were allowed to experiment and practice with various instruments, such as the glockenspiel, the gu-zheng and the Omnichord. The experimentation also branched off into generally non-musical objects. An example can be heard on the song "Airports", where the percussion includes implementation of a bathroom sink. According to the members, they enjoyed recording in the studio bathroom because of the "natural reverberation" that occurred when playing.[1]