Late last week, Trey Songz dropped the visual to his DJ Mustard-produced single “Na Na,” co-starring the gorgeous Rosa Acosta. To celebrate the premiere, Trigga and Rosa hosted a “pop-up” video premiere party at Bugatta Restaurant in L.A., extending special invites to members of “Trey’s Angels” who were chosen from his social network, “The Angel Network.” Check out a few shots from the event in the gallery!