Stevie Wonder Performs Pop-Up Concert in Central Park

Signed, sealed, delivered, he's yours.

Stevie Wonder gave a free pop-up concert in Central Park Monday night.

Earlier, he performed free shows in Washington and Philadelphia.

It's part of a promotion for his "Songs in the Key of Life Performance'' tour.

Wonder is on the SummerStage in Central Park.

The show began at 7:30 p.m.

Tickets are sold out.