This sure was a big weekend for concerts and festivals, on Saturday the 4th annual Roots Picnic commenced in Philadelphia. The full-day event featured headlining act Nas (backed by The Roots), plus Wiz Khalifa, Yelawolf, State Property, Mac Miller and more. Above, you can catch Nas performing “One Mic.”

Photos via Mel D. Cole (Village Slum): Part 1 & Part 2

Spotted at  NavJosh/HHNM

Related: The Roots Plotting ‘Orchestral’ Album (Billboard)

Catch more footage after the jump…..