Suzann Christine, Gregory Corbin and Aja Graydon test their Philly knowledge live at the Roots Picnic. How well do you know your Reading Terminal Market merchants? Remember when the first Roots Picnic took place? Corbin, community activist, poet and educator, joins Team Justin, and Graydon, the lady from Kindred the Family Soul, and Christine, R&B artist, join Team Rachel for a good time and a great history lesson moderated by Laiya.