“‘Blue’ is the emotion I wanted to express,” Katie explains. The Korean-American singer wanted to express her emotions and experiences during the time of her hiatus since releasing her last single ‘Echo’ to her new EP Our Time is Blue, which dropped earlier this month. As the keyword “Blue” suggests, the narrative of the album flows naturally ― from the opening track "Classic" to the last "Lullaby" ― like a calming river of sound. The six-track set was helmed by Stint, the Canada-born, Los Angeles-based producer who has worked with the likes of KUYA, Kesha, Gallant, and Nao, while the lead single “Blue” features Leven Kali.