Vocally, Mabbitt experimented for the self-titled album. On both tracks "Lost in Darkness" and "Liars and Monsters", a track that appears on the Deluxe Edition of the album, he sang at the lowest pitch he has done yet for a track. On the track "Zombie Dance", Mabbitt described the recording process and that he recorded five layers of vocal harmony for the final mix in addition to little sound effects. He explained it was difficult to achieve the high harmonies and right pitches right for all of the tracks. Another difficulty he experienced while recording was boosting the endings of songs for an epic feels. Despite this, Craig stated he enjoyed experimenting and that he "can't wait to keep on going back into the studio and experimenting on a ton of different things."