Here is a brief guide to the round's in the competition, click on the name of the round to go to a complete list of the songs in which you can sing in that round.

Round 1 (Audition)

You can pick any Christina song from and of her albums, b-sides, non-released songs and songs she has sung live, e.g. At Last.

Round 2

You can pick any Christina song from and of her albums, b-sides, non-released songs and songs she has sung live, e.g. At Last.

Round 3

You can pick any song from her 'Christina Aguilera' album.

Round 4

You can pick any song from any artist you chose.

***ROUND 4's theme has been replaced by Round 5's theme and will then go straight to the Final because of contestants missing the deadline***

Round 5

You can pick any song from Stripped

The Final

You can pick any Christina Aguilera song, as in the Audition Round, but you MUST sing one song from Group 1 (Ballad) and one song from Group 2 (Up-Tempo).