The Matrix as "a marriage between Man and Machine". For the scene when Neo wakes up in the pod connected to the Matrix, the pod was constructed to look dirty, used, and sinister. During the testing of a breathing mechanism in the pod, the tester suffered hypothermia in under eight minutes, so the pod had to be heated. Kym Barrett, costume designer, said that she defined the characters and their environment by their costume. For example, Reeves' office costume was designed for Thomas Anderson to look uncomfortable, disheveled, and out of place. Barrett sometimes used three types of fabric for each costume,
Alter Ego (soundtrack) to promote the film in the mainstream. Rouvas contributed vocally to five songs on the soundtrack, two of which, namely "One With This World" and "Nothing" were duets with his co-star Doretta Papadimitriou and were performed in the film by the actors as the group "Alter Ego". The song "Suspicious Minds" was written by Mark James and originally performed by Elvis Presley, but was covered by Rouvas. The majority of the songs are performed or titled in English, as was chosen by the film's producers for marketing reasons. Other than Rouvas, vocal performers include Dimitris Wang, Vello Leaf, V-Sag, Alexandra