"It's an absolute dream come true to be here today and to play in Central Park. I grew up five blocks from here," the singer said.
Lady Gaga has a new album called "Born This Way" that debuted at No. 1 this week.
Some of her fans waited two days to see her perform in Central Park.
It's going to be the site of over a dozen concerts this summer, including performances from Jennifer Hudson, Beyonce and Brad Paisley.