What Is Love? is the fifth extended play (EP) by South Korean girl group Twice. It was released on April 9, 2018, by JYP Entertainment and distributed by Iriver Inc.
The EP features a total of six tracks, including the title track "What Is Love?", composed by Park Jin-young (J.Y. Park), founder of JYP Entertainment. Other tracks include "Sweet Talker," co-written by Jeongyeon and Chaeyoung, and "Dejavu."
What Is Love? was a commercial success, topping the Gaon Album Chart in South Korea. The title track also achieved considerable popularity, winning several music show awards and becoming a hit song. The EP contributed significantly to Twice's continued success and solidified their position as a leading K-pop group.
The concept of What Is Love? revolves around the curiosity and questions surrounding the feeling of love. The music video for the title track depicts the members of Twice recreating famous scenes from various romance films.