The "Budweiser Made in America" concert has been rocking Philadelphia for more than four hours, with several more to go on its first day.
Young & Sick kicked off the festival Saturday afternoon. Since then, acts including Big Daddy Kane, Cherub and Mayer Hawthorne have entertained big crowds on the Benjamin Franklin Parkway.
This is the third year the Jay Z-curated festival has been held on the Benjamin Franklin Parkway over Labor Day weekend.
The headliner Saturday is Kanye West, who is scheduled to take the stage at 10:30 p.m.
The two-day music extravaganza was first held in 2012 to showcase acts that Jay Z said "embody the American spirit." This year, he added a location in Los Angeles to the bill.
In Philadelphia, concertgoers will be able to see bands such as The National, Kings of Leon, Pharrell and Tiesto.
At Grand Park in Los Angeles, performers will include Iggy Azalea, John Mayer, Imagine Dragons and Weezer.
