As she had already worked with Midnight in the past, he already knew what "she wanted to talk about and what she was going through at that time". For "Metamorphosis", Bennett, Midnight and Duff had discussions about "all these changes that were going on" in her life. Bennett wrote the track and then got together with Midnight to compose the lyrics and the melody. Duff had only a couple of days to record the vocals for "Metamorphosis", as she was also working on a film at the time. As Bennett was putting the song together he realized that he had a "different spin on the melody", so Duff went back into the studio to "lay down a different melody" for the chorus at the last minute. Duff's "really strong work ethic" greatly impressed Bennett.