Ariana Grande surprised the crowd at Coachella by bringing up NSYNC! Well almost all of NSYNC. JC Chasez, Chris Kirkpatrick, Joey Fatone, and Lance Bass joined Ari after she performed "Break Up With Your Girlfriend" which samples the group's 2000 song "It Makes Me Ill," the guys then sang "Tearin' Up My Heart."
Justin Timberlake was not there due to scheduling conflicts with his Man Of The Woods tour. But he did send love via the gram: