LONDON, UK  [Tuesday Sep.26.2006]  /Mix103FM.com/ -- Jay-Z gave fans a little surprise at his sold-out London show this past weekend.

The rapper delighted the audience by introducing girlfriend Beyonce Knowles. The couple then went on to perform "Crazy In Love" as a duet. Ever the crowd-pleaser, the R&B diva couldn't leave fans hanging without a taste of the latest, and broke into the hit single "Deja-vu."

NaS was also on hand to treat the crowd to a couple of tracks, and joined Jay-Z for "Dead Presidents II."

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