Oh Wonder are a London-based alt-pop duo, consisting of Josephine Vander Gucht and Anthony West. Since releasing their debut album, they have seen international success with their alt-pop singles. Gucht and West recorded and released one song a month for a year, starting in September 2014. All of the songs were released together as a self-titled debut album on 4 September 2015. On 14 July 2017, the duo released their second album, Ultralife. Both albums have received cross-platform success.