B2K's Omarion went solo in 2005 with O, featuring production help from the Neptunes, Rodney Jerkins, and the Underdogs. The title track, released as the lead single, helped send the album to the top of the Billboard chart. Also an actor, Omarion appeared in the movie version of Fat Albert, You Got Served, and The Bernie Mac Show. ~ Andy Kellman, All Music Guide