Last night, at a concert at Hollywood’s Catalina Bar and Grill, the audience arrived expecting a performance by Jason Robert Brown (and, according to their website, maybe some drinks and Italian-American fare), but they got so much more! Ariana Grande made a surprise appearance, coming out onstage in an oversize sweater and big glasses, like someone just woke her up from a cozy sweater-nap. You can’t tell if she’s holding a tiny kitten or just finished her favorite novel, but let’s face it, probably both! Grande sang three songs, two of which were from the musical that marked her Broadway debut, 13, composed by Jason Robert Brown. How’s that for a coincidence?