1TYM (원타임, pronounced as "One Time") is a four-member Korean hip hop group. The four members are: Oh Jin Hwan (오진환), Park Hong Jun (박홍준, known as Teddy Park), Song Baekkyoung (송백경), and Im Taebin (임태빈, known as Danny).  Leader Teddy and lead vocalist Danny (Taebin) originated from the United States and moved to South Korea when they were accepted under YG. The two had already known each other, and later met Jin Hwan and Baek Kyoung during their trainee days, trying to debut as 1TYM.
During 2006, 1TYM was on a hiatus due to Oh Jin Hwan's military service. Even though technically, 1TYM hasn't officially broken up yet, they have been inactive since 2005. Song Baekkyoung took on a project participating in another group, MoogaDang. Currently Teddy is one of the main producers under YG Family. Danny for a short while started his solo career, and went into acting. In 2012, he started his own show Danny from LA, which premiered in September 2012.