What time is Strictly this week and what are the songs and dances?

After yet another shock dance-off, it does seem like anything can - and probably will - still happen.

Here's everything you need to know – from the songs and dances to what time Strictly is airing this weekend:

What are the songs and dances for Strictly's semi-final?

Alexandra Burke & Gorka Marquez

Salsa to Finally by Ce Ce Peniston

Viennese Waltz to Everybody Hurts by Tina Arena

Strictly Come Dancing Alexandra Burke Gorka Marquez

It seemed implausible, but for the second week in a row, arguably the strongest dancer in the competition landed in the bottom two. Alexandra and Gorka went up against Davood Ghadami and Nadiya Bychkova after having to face the dance off, and it was Alexandra who won the unanimous vote from the judges to remain in the competition.

Former professional Joanne Clifton has said she wants to see more wow moments from Alexandra (and Debbie!) so here's hoping that the Salsa and Viennese Waltz are able to lift her from great to a-ma-zing this week...

Mollie King & AJ Pritchard

Samba to Whenever, Wherever by Shakira

Waltz to Angel by Sarah McLachlan

Strictly Come Dancing Mollie King AJ Pritchard

A Samba to Shakira? We think this was made for Mollie!

Her Rumba last week earned mixed reviews - not least from Craig who pulled Mollie up on the fact they had a very illegal lift in their routine. But now she's got the chance to redeem herself with a Samba and a Waltz, which both feel like dances that she'll bring a lot of fun and precision to.

Oh, and those rumours continue to swirl about a possible romance, despite the fact they both flat-out denied that anything is going on to us.

Joe McFadden & Katya Jones

American Smooth to have You Met Miss Jones by Robbie Williams

Argentine Tango to Human by Rag'N'Bone Man

Strictly Come Dancing Joe McFadden Katya Jones

There we were, thinking that the Strictly Come Dancing producers get all their cheesy song references out in the first few weeks then BOOM. Out of nowhere they hit us with a Have You Met Miss Jones for Joe McFadden and Katya Jones (!) to perform to. Sneaky.

The American Smooth doesn't seem too troublesome, but Joe will be only the second male celebrity to perform an Argentine Tango this series, the first being Davood. And we all know how that worked out...

Debbie McGee & Giovanni Pernice

Jive to I'm So Excited by The Pointer Sisters

Foxtrot to Isn't She Lovely by Stevie Wonder

Strictly Come Dancing Debbie McGee and Giovanni Pernice

They've caught us out again! Fresh from the Joe and Katya punning above, Strictly have delivered us another one...

Debbie is known as The Lovely Debbie McGee, and so it seems only right that she dances a Foxtrot this week to Isn't She Lovely by Stevie Wonder. All we're wondering is why it took the producers this long to wheel this track out...

When it comes to her second song, we can't help but feel excited about the prospect of Debbie dancing a Jive. Could it be a real wow moment?

Gemma Atkinson & Aljaž Škorjanec

Tango to My Sharona by The Knack

Rumba to Beneath Your Beautiful by Labrinth feat. Emili Sande

Strictly Come Dancing Gemma Atkinson Aljaz Skorjanec

Eek! After suffering some more under marking (in our opinion!) last week, Gemma is going to have to come back fighting with this Tango and Rumba to be in with a shot of making the final and avoiding the bottom of the leaderboard.