Ahn Yein 안예인 is Melody Day's main vocal.
Yein was born on Thursday, May 4, 1995. She was born in the Chinese Year of the Pig and her zodiac star sign is Taurus. She's 168 cm or 5'6" tall.
Like fellow member Chahee, her blood type is A.
She's attended Central University, majoring in theater. She's from Busan.
Her father is actor Ahn Jihwan.
She acted on the 2014 tvN drama King of High School Life Conduct" in the role of Lee Bitna. She sang "Whatever" for the 2015 drama "Will You Love Me."