HaSeul (or LOOΠΔ & HaSeul) is the third single album from South Korean girl group Loona's pre-debut project. It was released on December 15, 2016, by Blockberry Creative and distributed by CJ E&M.[1] It introduces member HaSeul and contains two tracks, her solo "Let Me In", and a Christmas collaboration song between her, HeeJin and HyunJin, titled "The Carol". Music videos for both songs were released simultaneously on December 15.
| Title | Lyrics | Music | Arrangement |
|---|
| 1. | "The Carol" (HeeJin, HyunJin and HaSeul collaboration) | G-High, Park Asher (MonoTree) | G-High, Choi Young-kyung, Park Asher (MonoTree) | G-High, Park Asher (MonoTree) | 3:27 |
|---|
| 2. | "Let Me In 소년, 소녀" (HaSeul solo) | Oreo | Oreo | Oreo | 3:08 |
|---|
| Total length: | 6:35 |
|---|
