"Rokkugo" (로꾸거!!!) is the first debut single by Super Junior-T, released on February 23, 2007.
- Rokkugo (로꾸거!!!)
- First Express (첫 차) (feat. Bang Shil-i)
- Don't Go Away (나 같은건 없는건가요)
- Rokkugo (로꾸거!!!) (Inst.)
- First Express (첫 차) (Inst.)
- Don't Go Away (나 같은건 없는건가요) (Inst.)
- Over 45,997 copies were sold by the end of the year, marking it Korea's sixteenth best-selling record and #1 best-selling single of 2007.
- Super Junior-T re-released this single in Japan on November 5, 2008, collaborating with the Japanese female comedy duo, Moeyan.
- Rokkugo, (로꾸거) is "gokkuro" (거꾸로) spelled backwards, a term meaning "backwards" or "opposite."