Baek Ga-young (Korean: 백가영; born October 23, 1987), better known by her stage name Hello Ga-young (Korean: 안녕하신가영), is a South Korean singer-songwriter. Before beginning her solo project, she was a member of Joa Band, a Korean indie band, from 2009 to 2013. She debuted as a singer-songwriter in December 2013, with her first single "A Song of Old Lovers" (Korean: 우리 너무 오래 아꼈던 그 말). Her albums were released by her independent music label helloeumak (Korean: 안녕음악), before she established a partnership with Interpark Entertainment in 2017. Except for some soundtrack appearances, all of her songs released to date were written by herself. From 2013 to present, Hello Ga-young has released two albums, three extended plays, and seventeen singles.