CB Mass was a South Korean Hip Hop group made of three members: Curbin, Choiza, Gaeko. They have a discography of three albums: "MassMediah" in 2000, "(Mass)Matics" in 2001, and "MassApeal" in 2003. They were one of the most successful hip-hop acts of Korea before dismantling amid some heated and very public dispute about money management. Gaeko and Choiza decided to cut tie with Curbin and carry on as a new group, Dynamic Duo. They became even more successful as a duo thanks to the release of two albums to date: "Taxi Driver" in 2004, and "Double Dynamite" in 2005.

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