The singer, then aged just 17, was pitchy when she first performed for the judges and was eventually sent home at bootcamp.
Undeterred, Joelle has clearly taken on the advice of Simon Cowell and Cheryl Cole, and been busy practicing for her big comeback.
Although we doubt Simon would've wanted it to be on a rival series.
Joelle will be seen auditioning on The Voice UK this week for the coaches, performing a cover of Adele's Rolling In The Deep.
And things get heated between the panel, as both Jessie J and Will.i.am fight over the young performer.
The Voice UK airs on Saturdays on BBC One.
Watch Joelle Moses performing below and tell us what you think!