I can't believe I'm spending time on something that involves Justin Bieber, but anyway ....
His flight is using the callsign "Gotham 72" (GTH72). On the archives you can pick them up in the descent working Boston Center (134.30), then to New York Approach (127.60), then to Tower (119.50). All communications are standard, there is no mention of anything abnormal.
ZBW-SWF05-Jan-31-2014-1830Z (from 18:45:30 to 18:55:05)
KEWR-NY-App-Sat-Jan-31-2014-1830Z (from 18:55:00 to end)
KEWR-NY-App-Sat-Jan-31-2014-1900Z (from start to 19:04:00)
KTEB2-Jan-31-2014-1900Z (from 19:04:30 to ? blocked)
At the begining of the TEB Tower archive you can hear Chopper 12 talking about investigating incidents of white powder at the Stadium and some nearby Hotels as possible anthrax. Lots of helicopter traffic buzzing around the stadium.