"That That" is a song by Psy, a South Korean rapper and singer. The song was released on his fifth studio album, "5th Album," in 2015. The song is an upbeat, energetic track that features Psy's signature fast-paced rapping style and catchy, catchy hooks. The lyrics are written in both Korean and English and talk about the importance of having fun and enjoying life to the fullest. The music features a lively, upbeat beat and catchy melodies that are sure to get stuck in your head. Overall, "That That" is a fun and energetic song that is sure to get you moving.