Cartoon Network released a teaser for the Steven Universe movie, announcing that it will be a star-studded musical. Most episodes of Steven Universe have at least one song, so it’s not surprising that the wrap-up film will contain loads. Chance The Rapper, Estelle, Patti LuPone, Uzo Aduba, Gallant, and Aimee Mann will contribute vocals to songs written by show creator Rebecca Sugar. Steven Universe, the cartoon about sentient gemstones that love each other very much, is ending this fall. Estelle, LuPone, Aduba, and Mann already voice characters on the show (gems Garnet, Yellow Diamond, Bismuth, and Opal, respectively), but Gallant and Chance The Rapper are new hires. Chance even has an executive producer credit! Deadline has a full list of musical collaborators for the film, including Tom Scharpling, Charlyne Yi, and Christine Ebersole.