Saara performs 'Angels' with Robbie Williams

Matt performs "Break Free" with Ariana Grande.

5 After Midnight perform "Signed, Sealed, Delivered (I'm Yours)" with Stevie Wonder.

Guest performers:

Stevie Wonder (there's usually a legacy artist on)
Ariana Grande
The Weeknd
Little Mix
Sia

The duets don't seem to attract the kinds of big names they used to anymore. Gone are the days of Beyonce and Rihanna agreeing to sing with the finalists.

According to Saara, Sharon has arranged something for her this week that she has always wanted to do.

Adam Lambert, Gaga or sia then

Wagner
Katie Waissel
Christopher Maloney

Dan Wooton suggesting Saara with Adam Lambert and Queen

What about 5AM and Matt

Kylie is doing the Sunday

First twitter duet rumours The Weekend, James Arthur and Adam Lambert

Yes, apparently
Saara with Adam Lambert
Matt with James Arthur
5am with The Weekend

Obviously Saara's gonna win if she gets to sing with Adam!!

If these are the three duets what would they each sing though

If it is a Saara and Adam duet what about Bohemian Rhapsody or Somebody to love as a songchoice

Matt and James would probably do Say You Won't Let Go.

Saara and Adam Lambert could do The Show Must Go On or Who Wants to Live Forever.

If 5AM do get The Weeknd, I think Can't Feel My Face is the most likely.

What about Bohemian Rhapsody or Somebody to love

Even Queen don't do BH live completely, so I doubt they would opt for that.

X Factor's not cool enough to have those 3 preferred acts in the final. They got lucky last year with Craig David and Adele and even luckier this year for Craig to return. If Saara performs with Sia she's won this, which is exactly why I don't think that willl happen.

Also the way Sia is and covers her face, she seems very solo and like she likes to be by herself when she performs. I couldn't see her performing with Saara. Willing to be proved wrong, but the other issue would be that Sia's voice is on another level. Even with the damage to her voice, she'd sing Saara under the table, especially if they perform Chandelier in the reduced key Saara performed it at last Saturday

Really? I love Ghosttown but I don't think Adam Lambert is a huge name in the UK and not an obvious vote puller.

The Weeknd is very much the "man of the moment" like Ed Sheeran was two years ago so I think 5am would seal victory if they manage to snag him for the duet.

I like the idea of BR (but it's one of those songs that shouldn't be covered in my opinion) and I've heard STL too much on this show already.

If 5AM duet with the Weeknd they could win. Practically his whole album in in the singles charts right now.

Yeah, if 5AM get The Weeknd, that means they are getting the Beyonce/Rihanna/Ed Sheeran push. Adam Lambert is not a big name in the UK, but is kinda popular in Finland (he also dated a guy from there), so I guess that would at least please the Finns. And then there is James Arthur for Matt.

It was planned that it'd be Emily with James but i think Matt with James is likely

I think these are all good matches.

Aside from Shawn Mendes, I don't know who else would duet with Matt Terry. Justin Bieber? Demi Lovato? I don't know. James has had one of the biggest hits of this year. I'm not a fan but he's in the charts right now and he's on the radio every day. I wouldn't suggest he's being thrown under the bus.

As for Saara, Adam is a great singer but he's so unknown in the UK.

With 5AM and The Weeknd, it's not a set up. The Weeknd is a given for this show seeing as he's huge at the moment and there's no blockbuster act of the same equivalence. I really can't imagine him duetting with Saara or Matt - it just wouldn't work.

Overall, I think they're matched well. But with a duet with The Weeknd, 5AM stand a much bigger chance than I had thought. But if you look at last year, Reggie & Bollie got a much better duet than Louisa.

I mean if 5am do either Starboy or I Can't Feel My Face......it is game over and they have it in the bag.

Either of the two would be amazing! Can't Feel My Face would have the most impact though.

Do people really vote for a contestant based on who they duet with ?????