When Omarion got his own installment in Sony's Playlist series, he had two solo albums to his credit, and it's not as if O and 21 are jam-packed with early-2000s R&B classics, so it is filled out with a couple highlights from his B2K days ("Bump, Bump, Bump," "Uh Huh") and remixes (the "Jiggy Joint Radio Remix" of "O," the "Mr. Mig Mixshow Extended Mix" of "Ice Box"). The four charting hits -- "I'm Tryna," "O," "Touch," and "Ice Box" -- from the two albums are included, as are a few of the stronger cuts not released as singles, like "Drop That Heater" and "Midnight." A very viable alternate to picking up those two albums.