Just four days after releasing "Scream," R&B superstar Usher on Monday debuted the third single from his upcoming "Looking for Myself" album.  Titled "Lemme See," the track features Rick Ross and was produced by Jim Jonsin.  Usher is scheduled as the musical guest on next week's "Saturday Night Live" episode, which will air May 12th, and the forthcoming album's first single, "Climax," is riding high at No. 1 on the Billboard R&B / Hip-Hop songs chart, extending the singer's record for the most No. 1s on the chart in the Nielsen DoundScan era to 12.