It was rumored this morning on the radio. It made the rounds on the Twitterverse. And now it's finally confirmed:

Stevie Wonder is playing a pop up concert at Dilworth Plaza at 3 p.m. today (Monday, August 17). 

The 25 Grammy-award-winning musician will be playing a few songs next to City Hall and then making a special announcement. Monday morning, some 500 people showed up for Wonder's spontaneous show in Washington D.C. 

Let's see if Philly can get a bigger crowd.

Oh yeah, it's free.