"Good Day" (Korean: 좋은 날; RR: joheun nal) is a song recorded by South Korean singer IU, released on December 9, 2010, through Kakao M (formerly LOEN Entertainment). Written by Kim Eana and produced by Lee Min-soo, the track acts as the only single from her third EPReal. A Japanese version of the song was released on March 21, 2012, as part of her second single albumGood Day.
Writing for New Straits Times, Bibi Nurshuhada Ramli described "Good Day" as IU's breakout song.[1]South China Morning Post's Sylvia Issa described the songs as a "unique musical phenomenon".[2] In November 2019, Billboard magazine compiled a list of the 100 Greatest K-Pop Songs of the 2010s, with the single "Good Day" ranking at number one.[3]
Commercial performance
"Good Day" debuted at number one of the South Korean singles chart on the 51st issued week of 2010.[4] It topped the chart for five consecutive weeks, falling to no. four on the fourth issued week in 2011. The song held the record for the most weeks at number one until 2018, when it was beaten by iKon "Love Scenario". Furthermore, the single topped the monthly singles chart in December 2010.[5]
^ ab2010년 51주차 Digital Chart [Week 51 of 2010 Digital Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on March 7, 2015. Retrieved July 2, 2019.
^2010년 12월 Digital Chart [December 2010 Digital Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. Retrieved January 26, 2020.
^아이유, 한국대중음악상 3관왕…시상식 불참 ‘아쉬워’ [IU, Korea pop the Triple Crown ... Attendance at the awards ceremony]. Segye (in Korean). February 29, 2012. Retrieved January 26, 2020 – via Naver.
^週間 シングルランキング: 2012年04月02日付 [Weekly Singles Ranking] (in Japanese). Oricon. April 2, 2012. Retrieved January 26, 2020.
^オリコンランキング情報サービス「you大樹」 [Oricon Ranking Information Service 'You Big Tree']. Oricon (in Japanese). Oricon. Archived from the original on December 2, 2018. Retrieved January 15, 2014.
Gaon Download Chart 2010년 [Gaon Download Chart 2010]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on October 18, 2013. Retrieved March 28, 2015.
2011년 Download Chart [2011 Download Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on April 2, 2015. Retrieved March 28, 2015.
2012년 Download Chart [2012 Download Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. p. 4. Archived from the original on August 15, 2016. Retrieved December 19, 2016.
Gaon Download Chart 2013년 12월 1주차 [Gaon Download Chart Week 1 of December in 2013]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on December 20, 2013. Retrieved April 17, 2015.
Gaon Download Chart 2013년 12월 2주차 [Gaon Download Chart Week 2 of December in 2013]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on February 22, 2014. Retrieved April 17, 2015.
2014년 Download Chart [2014 Download Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. p. 4. Archived from the original on August 15, 2016. Retrieved December 19, 2016.
2015년 Download Chart [2015 Download Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. p. 3. Archived from the original on August 15, 2016. Retrieved December 19, 2016.
^2011년 Digital Chart [2011 Digital Chart]. Gaon Music Chart (in Korean). Korea Music Content Association. Archived from the original on September 24, 2015. Retrieved January 26, 2020.
^정재형, 아이유 '좋은 날' MV 카메오 출연 '화제' [Jung Jae-hyung makes a cameo in IU's 'Good Day' MV as an agent]. Asiae (in Korean). Asian Economy. December 8, 2010. Archived from the original on July 13, 2019. Retrieved July 13, 2019.
^Japan debut single 『Good Day』(初回生産限定盤)(Type A)(DVD付) [Japan debut single [Good Day] (First Press Limited Edition Type A) (with DVD)] (in Japanese). EMI Records Japan. March 21, 2012. Retrieved July 13, 2019 – via Amazon.