Watch Rachel Potter Put an 'Insane' Spin on the Isley Brothers' 'This Old Heart of Mine' on The X Factor
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 Mo…