"Through the Night" (Korean: 밤편지; RR: Bampyeonji; lit. Night letter)[1] is a song by South Korean singer-songwriter IU for her fourth studio album Palette (2017). Written by IU and composed and produced by Je-Hwi Kim and Hee-Won Kim, the song served as the lead single of Palette, released on March 24, 2017. Marking her return to music, the stripped-down song offers a sharp departure from her previous single Twenty-Three.
"Through the Night" was a critical and commercial success in South Korea, topping all the major music sites. The song debuted at number two on the Gaon Digital Chart before achieving its number one status the week after,[2] becoming IU's 14th number one single in South Korea, enabling her to extend her lead at the time over popular idol groups Big Bang, Sistar, and 2NE1, which each had nine. As of April 2019, more than two years after its release, it has never once fallen out of the top 100 songs of the major music charts in South Korea.
