Jay Z, left,  joins his wife Beyonce onstage during Beyonce's "Mrs. Carter Show World Tour 2013", on Monday, Aug. 5, 2013 at the Barclays Center in the Brooklyn borough of New York.

Jay Z, left, joins his wife Beyonce onstage during Beyonce’s “Mrs. Carter Show World Tour 2013”, on Monday, Aug. 5, 2013 at the Barclays Center in the Brooklyn borough of New York.

*On Monday, Beyonce capped her string of concerts at Brooklyn’s Barclays Center by bringing her husband Jay-Z on stage in a surprise appearance.

The rapper performed “Tom Ford,” his “Magna Carta Holy Grail” track that features uncredited Beyonce vocals late in the song.

Watch below.