Chart Preview tease

YOUR RADIO CHART PREVIEW: Ready for a glimpse of the future? Epic's Meghan Trainor and Republic's Ariana Grande make moves at Pop while Glassnote's Childish Gambino and Capitol's Mary Lambert are set to chart; Def Jam's Jeremih retains the reins at Rhythm while Republic's Drake and Epic's Lil Jon, among others, see solid spin increases; and Republic's Milky Chance eyes the top spot at Alternative. That's just an inkling of the action you can expect on three key Mediabase charts next week, according to our crystal balls—er, ball—get the whole story here. (9/5p)