F.CUZ (pronounced as 'Focus'), is a South Korean boy band managed by CAN&J's Entertainment. F.CUZ made their debut on January 8, 2010 with their first single, JIGGY. NO ONE (2nd single), together with the re-recorded Chinese (Mandarin) version of JIGGY has been ranked no.1 on KPOP/JPOP/CPOP charts since their release on 7th May 2010, in Taiwan.

Pre debut Jinon, the leader of the group, was previously cast in the drama 'Cinderella Man', and also played the role of the male lead in SG Wannabe’s "Gashiri" music video. Lee U was an online good looking guy,prior to debut. Lee U first gained popularity in 2005 when he participated in many variety programmes with his father. He was originally set to debut as a solo singer under the name U (Chinese character:唯) Lee U also participated in the SBS Drama 'Gourmet' soundtrack in 2008. Jin On, Kan and Ye Jun used to be members of a dance team that included several singers from Korea, such as Rain. Jin On, Ye Jun and Kan attended Anyang High School of Arts.



Discography:
1st Digital Single - JIGGY   Jan.8.2010 Korea
1st EP - No One    March.11.2010 Korea
Asia Special Album – No One   May.14.2010 Taiwan