NEW YORK -- TikTok’s crowdsourced “Ratatouille” musical has cooked up some serious talent for its one-night-only benefit concert, including roles for Tituss Burgess, Adam Lambert, André De Shields and Ashley Park.“Ratatouille: The TikTok Musical” — fondly nicknamed the “Ratatousical” — will begin streaming on Friday at 7 p.m. ET for 72 hours.