Cosmic coming-of-age cartoon Steven Universe yields a soundtrack that’s just as big-hearted as the show itself. Zach Callison, who voices the title character with giddy elasticity, delivers memorable gems in “Cookie Cat” and the rock-roughened “Big Fat Zucchini.” The rest is a delightfully mixed bag: Show creator Rebecca Sugar sings “Love Like You” as a jazzy ballad, while the full version of theme song “We Are the Crystal Gems” is a showtune-esque anthem that promises, “We’ll win the fight and then go out for pizzas.”