RL Grime will co-headline a show with Ty Dolla $ign at CU’s Balch Fieldhouse Feb. 25. Ty Dolla sign at CU.jpg Ty Dolla $ign will co-headline a show with RL Grime at CU’s Balch Fieldhouse Feb. 25. Ty Dolla $ign, who gained fame from “Toot It and Boot It” , will co-headline the show with RL Grime, who’s been tapped as a master of bass and a trap pioneer. Opening the show is Boulder’s SoDown.