Sitek explained to The Guardian
why he included a major key change on this song. "The key change at the end comes from a time when Kyp and I stayed up all night at the Columbia Hotel in London getting drunk with an English guy who made a really convincing argument for the most important song in the history of music being Living on a Prayer
by Bon Jovi. Ever since then we've been wanting to put a key change on a song. It's hilarious: Kyp's already in this high falsetto range and then he just steps up even higher. It's a crazy vocal performance."