One of the best things to come out of Staten Island, the 5th graders of the PS 22 chorus, are getting some more attention with a documentary that will premiere at TriBeca Film Festival this year. The trailer for Once In A Lullaby has just been released (watch it below), and the doc will focus on the public school kids from Staten Island and their teacher Gregg Breinberg, who have been invited to perform at the White House and The Oscars.