Published Thursday, 26 September 2013
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The 28-year-old music teacher, who is based in England, impressed the judging panel during the audition process of the competition, after performing her own song 'Any Minute Now'.
Following her audition, judge Gary Barlow told her: "That was a beautiful song, I thought you put it across really well and I was hooked."
Louis Walsh added: "You are definitely different and you have definitely got your own niche."
Speaking ahead of her first gig in Northern Ireland for 10 years, Andrea told UTV she had been overwhelmed with the local support she has received.
She said: "Even just being back for a day it's been lovely for people to come up and congratulate me and to be able to represent my country with music is just absolutely lovely."
X Factor viewers will see Andrea's Bootcamp performance this weekend, where she decided to showcase her diverse talent by playing instruments such as the flute and bodhrán.
"I thought "if I do this, I'm going to treat it exactly like I treat a gig. I'm gonna go in there and I'm going to sing my own song, I'm gonna play my instruments and if they like me and they put me through, that is such a bonus and if they don't, I'm still in the same place".
"So I've just taken everything with a pinch of salt."
And the talented singer has nothing but high praise for the X Factor judges.
"They've been really cool because they've all been so positive to me.
"Louis (Walsh) is great because he just enjoys the banter - they are all really nice, they are all really positive and their criticism is always very constructive, so I appreciate that."
Andrea's Bootcamp performance will be shown during The X Factor on Saturday at 8.20pm and Sunday from 7.30pm on UTV.
© UTV News