"Hello" (Korean: 안녕; RR: Annyeong) is a remake song recorded by South Korean singer and Red Velvet member Joy. Originally recorded and released by singer Park Hye-kyung in 2003, the song was re-recorded and was released on May 31, 2021, by SM Entertainment as a title track from her special remake album of the same name. Composed by Kang Hyun-min and also written by him along with Park Hye-kyung and Park Ji-won, the track was described as a modern rock genre song. It is about forgetting the hard days and celebrating a new day. The song peaked at position 10 on the Gaon Digital Chart and Billboard K-Pop Hot 100.