On November 3, 2016, Rupert Gregson-Williams was hired to write and compose the film's music. He was joined by Evan Jolly, Tom Howe, Paul Mounsey, and Andrew Kawczynski, who provided additional music. The soundtrack was released on CD, digital, and vinyl the same day as the film. Australian musician Sia sang a song for the film, titled "To Be Human", featuring English musician Labrinth. Written by Florence Welch and Rick Nowels, the track is also featured on the soundtrack. The soundtrack also features samples from Wonder Woman's theme "Is She with You" from the Batman v Superman: Dawn of Justice soundtrack composed by Hans Zimmer and Junkie XL.
In the New 52, the night when she turned 8, Ares appeared before Diana and offered to train her above and beyond the abilities of the Amazons, having seen her potential to eventually become his replacement as the God of War. Though the training was one for one night each month, the year was noticed with Diana improving tremendously compared to the other Amazons.