were painted and enlarged. This process took place across two weeks, with some revisions made due to the artist's dissatisfaction with some of the enlarged figures. The black-and-white figures were then coloured in blue at a vitreous enamel factory in England. Travelling to the factory to oversee the production process, Woo also gave further instructions and ensured the colours of the final product come out right. Commuting Waves Displayed on the wall of the CCL platforms near the escalators, Commuting Waves by Jason Ong is a pair of sculptures depicting 3D waveforms. The waveforms were derived from commuter traffic at the station, with the positions of the glass 'fins' representing the passenger volume and train frequencies. The work is intended to reflect the rhythm and flow of human activities, which linked the work to the station's location, human values and the MRT system. The work was created through indeterminacy, inspired by experimental music of John Cage. The inspiration came when Ong was researching soundwaves (waveforms being a distinctive element of the waterfront area), and intended to create the waveforms based on the station's environment. Two assistants recorded the train frequency and passenger traffic on a randomly selected weekday and weekend. The artist noted that the data was only derived from commuters on the NEL, since the CCL was not yet operational when the work was created. Nevertheless, he concluded that the graph shapes would remain similar if he were to include passenger numbers from the CCL. The graphs had to be transformed into sculptures that are "aesthetically pleasing". The protrusion and spacing of each "fin" were dependent on the passenger traffic and train frequency respectively. Using phase shift, a concept by minimalist composer Steve Reich, the data lines were spaced out from the original graphs. Each alternating frequency was split into different layers that spread across the walls. The eventual shapes of the waveforms were derived from the freehand outlines of the graphs. These outlines were also mirrored to produce the shapes. The sculptures are in red, which not only reflects the human rhythm but also complements the CCL station's theme, contrasting with the NEL's blue theme. While initially planned to use metal shapes, upon seeing the portfolio of the production team, Ong changed to glass. Ong grouped the fins into sets of six and used serialism to give each fin a different red "tone". The glass used were opaque