People line up to enter the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (AP Photo/Matt Rourke)

An event goer with an umbrella in hand to shield herself from a midday rainstorm enters the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (AP Photo/Matt Rourke)

Drake performs at the the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

People listen to music from outside a perimeter of the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (AP Photo/Matt Rourke)

Run DMC performing at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Lead singer of The Hives Pelle Almqvist performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

Jimmy Bevan adjusts his umbrella as he listens to music from outside a perimeter of the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (AP Photo/Matt Rourke)

Jill Scott performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

Rita Ora performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Santigold performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Pearl Jam performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Pearl Jam performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

People listen to music from outside a perimeter of the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (AP Photo/Matt Rourke)

Miike Snow performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Jay-Z performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

D'Angelo performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

D'Angelo performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

Michael Angelakos of the band Passion Pit performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)

Maybach Music Group performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Drew Gurian/Invision/AP)

Gary Clark Jr. performs at the 'Made In America' music festival, on the Benjamin Franklin Parkway in Philadelphia. (Photo by Charles Sykes/Invision/AP)