重要！比賽淘汰新制！Song For Survival！！！
The X Factor results show has always been a tense half hour of top
entertainment - but to add to the drama, tonight's viewers will see their
favourite format updated with a brand new twist.
For the first time ever, the acts which receive the fewest public votes must
choose an all-time favourite track to perform for the judges; they must sing
it while the panel decide whether or not they should be saved. Until this
point, contenders have performed the night's rehearsed track again.
The change is proving popular. After all, it's a fabulous opportunity for the
contestants to take fate into their very own hands, showing the public
exactly what they - and their voices - can do.
Each song will handpicked by the desperate contenders themselves, each
believing the track they have chosen will give them the best chance of
staying in the show.
Of course, we have no idea yet which contestants will face this final trial
in their fight for X Factor survival.
But you can be sure that whoever steps up to the microphone to sing again
will put every inch of their heart and soul into a song they know and believe
in.
This track will be known as the Song for Survival. The result of the vote is
in your hands. So listen to the performances, and then decide. Who will you
choose to save?
（小版附註）
簡單說就是，result show 會先公佈 Bottom 2。
然後這兩組各選一首歌曲（不限主題），作為自己的 The Song for Survival。
唱完之後由四個評審投票，看誰被淘汰。
如果出現平手（Deadlock），就公佈觀眾投票最低票的組，即為該週被淘汰的組。
此規則從 Season 5 開始進行。