Melody Day (Hangul: 멜로디데이) is a South Korean girl group formed in 2012 by Cre.ker Entertainment (formerly known as Viewga Entertainment). The group officially debuted with their single album Another Parting in February 2014 and with three members: Yeoeun, Chahee, and Yein. The fourth member, Yoomin was added to the group in October 2014.

2012–13: Pre-debut

Melody Day started their career as a trio in 2012, featuring on soundtracks for dramas such as Bridal Mask, Cheongdam-dong Alice, Missing You, My Daughter Seo-young, The King of Dramas, I Can Hear Your Voice, Master's Sun and Pretty Man. On June 26, 2013, they released the ballad track "Loving Alone" as part of the single album New Wave Studio Rookie, Vol. 1.

2014–2016: Debut, new member Yoomin and further releases

Melody Day officially debuted with the single album Another Parting on February 25, 2014, with the title track of the same name. Its music video featured the actors Seo In-guk and Wang Ji-won. The group's debut music show performance was on KBS's Music Bank on February 28.

Melody Day released duet project featured 2AM's Changmin titled "The Very Last First" were released on May 21 and featured CNBLUE's Lee Jong-hyun titled "To Tell You The Truth" were released on August 14. They released the original soundtrack for the drama Fated to Love You with the single "You're My Everything", a remake of Jeff Bernat's "Be The One".

In October, Melody Day introduced a new member, Yoomin. The group released the first song as a quartet, "Listen to My Heart" for the drama Naeil's Cantabile. On December 12, Melody Day released their first digital single "Anxious" featuring popular rapper Mad Clown.

Melody Day's second single album #LoveMe was released on June 9, 2015. On October 7, their third single album Speed Up was released, which their title track music video starring by GOT7's Jinyoung. On December 28, Melody Day released their second digital single "When It Rains" featuring VIXX's rapper Ravi.

Melody Day released their first extended play, Color on July 1, 2016. The album contains six tracks, with the lead single titled "Color" and including their previous digital single "When It Rains". In December 2016, Melody Day recorded the original soundtrack song "Beautiful Day" for the web drama First Seven Kisses.

2017–present: Kiss on the Lips

Melody Day released their third digital single You Seem Busy featuring BtoB's main rapper, Ilhoon, on January 24, 2017. The song was produced by Polar Bear and its lyrics were penned by JQ and Ilhoon. On February 8, Cre.Ker Entertainment announced that Melody Day was set to release their second mini-album, Kiss On The Lips and its title track of the same name, on February 15, 2017. On September 25, Cre.Ker Entertainment confirmed that Yeoeun, Yoomin, and Chahee are participating on KBS's Idol Rebooting Show The Unit. - Wikipedia