It's time to ring up 'Speed Dial with Ira and Doreen' again, MTV's bi-coastal podcast that tackles music, pop culture, sex and race. This week Ira Madison III and Doreen St. Félix discuss how Chance the Rapper's third mixtape, "Coloring Book," is rooted in the aesthetic of the black church. Also ahead: They discuss producer Kaytranada's debut album and talk about the History Channel's reboot of "Roots," featuring T.I. of all people.