Unlike many games, where different songs have different themes for each character or area, Wintory chose to base all of the pieces on one theme which stood for the player and their journey, with cello solos especially representing the player. Wintory describes the music as "like a big cello concerto where you are the soloist and all the rest of the instruments represent the world around you", though he describes it as not necessarily orchestral due to the inclusion of electronic aspects. The cello begins the game as "immersed in a sea of electronic sound", before first emerging on its own and then merging into a full orchestra, mirroring the player's journey to the mountain. While the game's art style is based on several different cultures, Wintory tried to remove any overt cultural influences from the music to make it "as universal and culture-less as possible". Tina Guo features as the cellist for the soundtrack. She is a close friend of Wintory and has since performed "Woven Variations" with him, an eight-minute orchestral variation on the Journey soundtrack. All of the non-electronic instruments in the soundtrack were recorded with a live orchestra.
Equality for all mankind is not a realistic goal in Wells's view. That, he believes, would mean a loss of individuality, and individuality is an inherent requirement of human nature. Similarly, competition is necessary to a thriving society. Taking what he considers a practical position, he sees the new society as divided into four classes of persons which he calls poietic, kinetic, dull, and base. There is a leader caste, called Samurai, which is drawn primarily from the poietic group, though some from the kinetic class may qualify. Persons who volunteer for Samurai membership must meet stringent requirements, both physical and mental; and they must pledge to conform to the rules of the caste, which forbid eating meat, smoking, drinking, gambling, and participation in public sports or entertainments. The Samurai furnish the World State with its administrators, legislators, lawyers, doctors, and other leaders. Furthermore, they are the only voters in the commonwealth. The male members of the Samurai are encouraged to marry women of comparable qualifications, and they are encouraged to produce children with the aim of improving the quality of the population. The lower classes of citizens, the dull witted, the criminals, and the deformed are exiled from society and prevented from childbearing.