Still longing for one more free outdoor-in-the-park concert in NYC? There’s a big one coming up, the Backstreet Boys as part of GMA’s outdoor morning series. You have to be willing to get there bright and early, bring your coffee (although then you risk the port-a-potty nonsense), but it’s always a good time. If last year’s Lady Gaga zipline over Central Park didn’t inspire you to attend, I’m not sure what will. The Good Morning America Summer Concert Series takes place at Rumsey Playfield, from 7-9am. Suggest that you arrive by 6am. Enter at the 72nd Street entrance on Fifth Avenue.