A few weeks ago, Rachel Potter was just a “bartender in Nashville, TN,” and now she’s wailing country songs on The X Factor! (And oh, did we mention she's also an alum of Broadway’s Evita and The Addams Family? Because the show never does.) With the help of mentor Kelly Rowland, the talented singer took the stage to perform an upbeat rendition of “This Old Heart of Mine” for Motown night on the FOX competition show, and we’re not gonna lie, the results were mixed. Simon Cowell called the performance “insane” and “horrible,” while Demi Lovato and Paulina Rubio couldn’t stop raving. Click below to check out her performance and judge for yourself.