A 14-year-old singer left all four X-Factor Australia judges, including Ronan Keating, speechless after her audition this month.

Rachael Thompson had Ronan Keating literally jumping for joy and the crowd on their feet after her rendition of Gabrielle Aplin's Please Don't Say You Love Me.

Thompson's audition has since gone viral online, receiving huge waves of praise and support. The young singer has even been hailed as the next Adele. 

Judges Ronan Keating, Natalie Bassingthwaighte, Dannii Minogue and Redfoo all declared it was one of the best auditions they have seen on the show.