Former boyband star Omarion has claimed the first new US album chart-topper of 2007 after debuting his 21 album at number one on the new Billboard countdown. The album sold 119,000 copies in its first week on release to topple rapper Nas' HIP HOP IS DEAD, which slides to number four on the new chart. The only other new entry in this week's top 20 is rockers Switchfoot's OH! GRAVITY, which debuts at number 18.