2Yoon (Hangul: 투윤, commonly stylized as 2YOON) is the first sub-group of South Korean girl group 4Minute, formed by Cube Entertainment in 2013. The sub-group consists of Gayoon and Jiyoon.
Gayoon and Jiyoon are the lead singers and sole members of 4Minute. Cube Entertainment CEO Hong Seung Sung wanted to pair them in a sub-group after watching the duo perform live at the 2011 United Cube in London.
The duo were known to fans collectively as Ssangyoon (Hangul: 쌍윤) (a portmanteau of the Hangul word for "twins" and the last characters of their given name "yoon"). However, as the pronunciation of "Ssangyoon" involves a tensed consonant, it was deemed to be ill-fitting for the group's cute image. As such, the sub-unit was renamed as 2Yoon. In addition, "ssangyoon" could be potentially misheard as a profanity, further supporting the basis for the name change.
2Yoon appeared on MBC's Weekly Idol as Ssangyoon, since the show was recorded before the official name change.
On January 7, 2013, Cube Entertainment announced that 2Yoon debut album, Harvest Moon, was slated for a mid-January release, with "24/7" confirmed as the title track. On January 22, 2013, 2YOON released its album and accompanying music video for "24/7". 2Yoon made its television debut on M! Countdown on January 18, 2013.
Verse 1: I became her lover, she became my lover. Had her heart broke, I was helping her recover. I became the man she knew she could rely on. Somebody to listen or shoulder to cry on. She was getting better, better she was getting. The more time spent, the more she would forget him. But then back around he seen that he started coming, and shes on the low taking phone calls from him. I thought that we were building something strong. He apologizes and now your gone. And I won't put up with this.
Pre-chorus: You wanna go. (Go.) Just hope you know. Baby your gonna be lonely, lonely again. Oh lonely, lonely. Go on go, go. Just hope you know. (Hey.) Baby your gonna be lonely, lonely again. Lonely, lonely again.
Chorus: Don't call me when your lonely again. When your lonely again, lonely again. Oh, sugga don't call me when your lonely again, when your lonely again. Lonely again. (Oh.)