VIDEO: POTTER WATCH: Rachel Goes Old School on THE X FACTOR

On a night of classic Motown songs on last night's THE X FACTOR, Broadway vet Rachel Potter took it way back with her performance of the Isley Brothers' "This Old Heart Of Mine." Check out the performance below!

"You're so energetic and you bring so much to the stage," said judge Demi Lovato following the number.

DisagreEd Simon, "It started off great and then the track kicked in. I thought it was horrible. I didn't get it."

Potter's mentor Kelly Rowland quickly diffusEd Simon's negative comments saying, "Just remember that we're in a competitive spirit and that's exactly what is speaking right now. When one speaks like that that's just them shaking in their boots!"

As a result of a graphics error (incorrect voting numbers were displayed on screen) during the performance recap at the end of last night's East Coast broadcast of THE X FACTOR, the Top 13 acts will perform their "Save Me" songs for America's re-vote, in a live, one-hour performance show airing tomorrow, Thursday, Nov. 7 (8:00-9:00 PM ET live/PT tape-delayed). The results from tomorrow night's vote will be revealed next week on The X Factor airing Wednesday, Nov. 13 (8:00-10:00 PM ET live/PT tape-delayed) on FOX.

Keep up with Rachel at:

Twitter: @therachelpotter

Facebook: www.facebook.com/rachelpottermusic

Rachel Potter starred in the first Broadway revival of Andrew Llyod Webber's Evita in 2012 in the role of Juan Peron's mistress. She wowed audiences with her stirring rendition of the ballad "Another Suitcase in Another Hall." The actress made her Broadway debut as Wednesday Addams in The Addams Family, with music by Andrew Lippa.

Her other theater credits include Glinda in the national tour of Wicked. She was also a contestant on the MTV reality series 'Legally Blonde: The Search for Elle Woods.'