"One" is a special digital single by different artists from Cube Entertainment. It was released on June 17, 2018 as a special album for the concert 2018 United Cube - One -. It features (G)I-DLE, BTOB, CLC, HyunA, Jo Kwon, PENTAGON and Yoo Seonho.
Track list
- "Upgrade" - 3:28
- "Mermaid" - 3:59
- "Follow your Dreams (한걸음)" - 4:31
- "Young & One" - 3:52