Madonna and her daughter Lourdes Leon made an appearance at the Roseland Ballroom in NYC on Saturday night. They held auditions to find a new dancer to join Madonna on her upcoming world tour and chose one lucky winner out of a group of contestants. Madonna's boyfriend Brahim Zaibat was also on hand for the event after the duo attended Kabbalah services earlier in the day. Madonna wrapped up the night by showing off her own moves in front of the crowd and even gave a nod to her recently leaked single by spelling out some of the lyrics. A demo version of Madonna's "Give Me All Your Love" hit the Internet last week, months before she intended to release the track. Her manager Guy Oseary tweeted that Madonna's "true fans" wouldn't spread the tune and pleaded for whoever is responsible to "please stop."