So here was something that stood out at the Roots Picnic festival at Philadelphia’s Festival Pier on Saturday: Willow Smith brought out her dad, a gentleman and rapper named Will Smith, as a special guest!

The elder Smith performed “Summertime” to an unsuspecting, elated crowd in the very early afternoon (seriously, Willow Smith played at 1:50 pm in the sweltering heat). Willow’s new-school R&B is more nebulous than a crowd-pleasing summer anthem, but hey, who doesn’t love a crowd-pleasing summer anthem, especially one as timeless as “Summertime”? Even Willow had to dance as her dad ruled the stage.

Check out Willow Smith discussing the art of performing on a recent episode of SKEE TV: