1TYM (원타임, pronounced "One Time") is a popular four-member Korean hip hop group. The four members are, from oldest to youngest, Oh Jin Hwan (오진환), Teddy Park (박홍준), Song Baek Kyoung (송백경), and Danny Im (임태빈, also known as Taebin). History: 1TYM began when Park and Im auditioned for Brothers Entertainment. Park and Im had been best friends and had attended Diamond Bar High School prior to their audition. After their audition, they were both selected to be sent to South Korea to further their careers as artists.