Christina Aguilera and Jimmy Fallon busked in disguise on the New York subway. Riding the New York City subway can be a strange experience, especially now that the system is so often wracked by delays and travel changes. This week, however, Jimmy Fallon decided to give commuters a pleasant surprise by dressing up in disguise alongside pop star Christina Aguilera and pretending to be buskers. The subway system is filled with such musicians playing songs at stations, but few of them have
