Primary has collaborated with various artists to produce the albums Back Again, Primary Score, Daily Apartment, Primary and The Messengers, and 2. He has also produced albums for other Korean hip hop artists, including Supreme Team's first album Supremier and Dynamic Duo's Kill, as well as several of MBLAQ's singles, including "I'm Back" and "Smokey Girl". He appeared in the MBC variety program Infinite Challenge in 2013.
