Fortunes changed once again tonight in the X Factor quarter finals, as Tamera Foster had a "Leona Lewis moment" and Rough Copy bounced back with aplomb.
Host Dermot O'Leary announced it was "double trouble", with each X Factor finalist singing two songs - one voted for by the public and the other chosen by each contestant as a song by their musical hero.
Gary Barlow warned that "some of the acts will be in trouble" as this week the emphasis was on versatility.
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Tamera Foster, who has forgotten her lyrics three times so far, was determined not to make the same mistake again tonight.
After seeing a hypnotherapist this week, the 16-year-old from Kent vowed: "I've got to remember the lyrics this week, there is no room for mistakes. I've definitely had a lot of chances so this week is do or die."
Following a flawless rendition of Rihanna's We Found Love, Barlow said: "It's not about the fall. It's how you get up after the fall. You have come back this week with a really strong performance."
Foster's second performance was Roberta Flack's The First Time Ever I Saw Your Face, as voted for by the public.
Louis Walsh called it a "Leona Lewis moment" as the winner of the third series of X Factor had sung that song.
Favourite to win Sam Bailey chose Whitney Houston's How Will I Know, revealing that the last time she sung a Whitney song was when she was 16 at a holiday camp.
Nicole Scherzinger said she felt it was "like a cruise ship version of that song" but Sharon Osborne hit back, saying: "I think the cruise ship you saw her on was called the O2."
The public chose Emeli Sande's Clown, a song which Bailey said made her think of her two children.
Barlow told the 35-year-old she was a "superb singer" and Scherzinger said she had just one word: "astounding". Osborne gushed: "Tonight you moved me, you touched my soul, I love you."
Judges were not won over by Nicholas McDonald's opening performance of Just The Way You Are by Bruno Mars.
Osborne told the Scottish 17-year-old: "Now is the time that the inner Nicholas has to come out and you have to be like a lion."
Barlow said: "Risk is a key factor at this point in the competition. Right now it's just a little bit too middle of the road."
McDonald admitted he was taking a "massive risk" by choosing Take That's The Greatest Day as the song by his musical hero.
But Walsh reassured him that the risk "totally paid off" adding: "You know what you remind me off - a young Gary Barlow."
Osborne agreed: "I felt the passion. Not only could I feel it I could see it in your eyes. I could feel that inner beast rising within your soul."
Luke Friend sang Skinny Love by Bon Iver first, then for his musical hero song he picked Mumford & Sons' I Will Wait.
Walsh said of Friend's first song "I didn't have the heart to tell him that I hate that song".
But after the second performance, the judge asserted: "You deserve to get a record deal. I think you are the one to watch."
Friend, who admitted that he used to put on shows for his family and charge them £1 to come into his room to hear him perform, was praised by Barlow: "Overall the vibe was fantastic, the whole studio loved it."
After finishing in the bottom two last week, Rough Copy made a fierce comeback tonight with a megamix of R Kelly's She's Got That Vibe and Bobby Brown's Every Little Step.
Scherzinger told the R'n'B Trio: "You boys deserve to be in the finals, absolutely."
Barlow added: "This is the way to get back into this competition, great job."
The audience booed Walsh as he said: "I thought it was good, I didn't think it was great. The vocals were a little bit weak."
Voters chose R Kelly's I Believe I Can Fly. Scherzinger called it an "uplifting performance" adding: "You took us to RC church - a little bit of heaven."
The acts will return tomorrow night when they find out who will make it to the semi finals.
Poor old Joe McElderry might have won series six but it was undoubtedly runner-up Olly who ended up victorious. Where Joe's career never really got started, Olly bagged himself a no.1 single with Please Don't Let Me Go and a double platinum debut album. His second album hit the shelves in November and he's currently presenting X Factor spin-off show The Xtra Factor. (Pic: Wire Image)
One Direction, Series 7(02 of16)
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They were thrown together at Bootcamp after they failed to make the grade as solo acts - but for Louis, Harry, Zayn, Niall and Liam it was probably the best thing to ever happen to them. One Direction zoomed straight to the final of the seventh series and while they only finished third, Uncle Simon wasn't going to let them go that easily. Their debut single What Makes You Beautiful shot straight to number one, and their album Up All Night hit number two. Something tells us these lads could be here for a while... (Pic: Rex)
Cher Lloyd, Series 7(03 of16)
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Cher Lloyd was one of the most controversial acts in the seventh series of the show, despite being 'right up Cheryl Cole's street'. While she only finished fourth, the pint-sized popstar was snapped up by Simon and whisked off to LA to record with top American producers. She returned to these shores with her Marmite single Swagger Jagger, which hit the top spot in the summer of 2011. An album soon followed, as did more snarly attitude. (Pic: Rex)
Stacey Solomon, Series 6(04 of16)
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Dagenham gal Stacey might not have won the singing comp but she's gone on to become something of a reality star after being crowned Queen of the Jungle on I'm A Celebrity... Get Me Out Of Here! And thanks to Kerry Katona's extra-curricular habits she's also replaced her as the face of 'mum's favourite' Iceland - no surprise then, that she was also voted Mum of the Year. And it looks like singing is back on the agenda too, with an album in the pipeline and live gigs around the country. (Pic: Getty)
Andy Abraham, Series 2(05 of16)
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In the closest ever X Factor final, bin man Andy was pipped to the post by Shayne Ward by just 1.2% of the vote. It was still enough for him to secure a recording contract and his debut album reached no.2 (beaten to the top spot by fellow X Factor losers Journey South). Other less successful albums followed before Andy was chosen to represent the UK at the 2008 Eurovision Song Contest. He came last. Despite this, his website describes him as a man 'who has braved and exceeded all expectations over the last 4 years'. Hmmm. (Pic: Getty)
Chico Slimani, Series 2(06 of16)
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Proving that a little luck can go a VERY long way, the former stripper made it to the quarter finals of series two and even managed to score a number 1 single (the all-time classic It's Chico Time) before doing the obligatory tour of Butlins. He later went on to sing at Muslim events under his original name of Yousseph Slimani and even re-recorded his first single as It's England Time after having a vision that England won the 2010 World Cup. Oh dear. He is now married to the sister of tennis star Nenad Zimonjic who he is expecting his third child with. (Pics: Rex)
Eoghan Quigg, Series 5(07 of16)
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For every JLS there are a dozen Eoghan Quiggs (or Eggnog as he *coughs*affectionately became known). Despite bagging himself a record deal and a support slot on Boyzone's UK tour, things sped downhill quickly for the big-haired Irish lad after his debut album flopped and was declared 'the worst album in the history of recorded sound' by the Guardian. Ouch. He was last seen popping up on Harry Hill's TV Burp. Say no more. (Pic: Redferns)
G4, Series 1(08 of16)
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The four piece vocal troupe might have been runners-up to series 1 winner Steve Brookstein but actually went on to outsell him - shifting 240,000 copies of their debut album in the first week of release - but eventually split in 2007 due to disagreements within the band. Nothing has been heard from any of them since apart from ickle Jonathan (the blond) who is about to embark on a mammoth eight date 'intimate' tour of the likes of Hartlepool. Aaah, the fickle finger of fame. (Pic: Rex)
Jedward, Series 6(09 of16)
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Who'd have thought that Irish twins John and Edward Grimes would go so, so far? Despite no obvious talent the brothers are already both millionaires and can count David Cameron amongst their fans. They've released two albums, been the face of Nintendo DS , Rowntrees Randoms, Travel Supermarket and Shake 'n' Vac and represented Ireland in the Eurovision Song Contest. Heck, they've even performed for President Obama. And then they had a turn in Celebrity Big Brother for a reported £1million. (Pic: Getty)
JLS, Series 5(10 of16)
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If ever there was proof that you don't need to win X Factor to go on to have a successful career then JLS are it. The boys' debut album sold over a million copies, they've had five number one singles (the only X Factor act to do so), won two Brits and four MOBOs. And if any further proof were needed that JLS have hit the big time - they also have their own line of condoms. (Pic: Getty)
Lucie Jones, Series 6(11 of16)
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Life's been pretty good for Lucy since appearing on the X Factor. She landed a modelling contract (and became the face and body of Wonderbra), performed opposite rumoured love interest Nick Jonas on the London stage, spent a year in Les Mis and is about to give a pop another stab. She was briefly linked to Louis from One Direction and is currently dating Cameron Mackintosh's personal trainer after being introduced by the impresario. Busy gal. (Pic: Film Magic)
Ray Quinn, Series 3(12 of16)
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If it wasn't for a certain Leona Lewis, Ray would have won the third series of X Factor but had to make do with the runner's up role. He still managed to bag himself a number 1 album though before being unceremoniously dumped by Mr. Cowell. Proving you can't keep a chipmunk-faced crooner down, he went on to star in Grease the Musical before skating off as the winner of Dancing on Ice in 2009. He was last spotted opening a fete but things are looking up again with a panto and another stint in Grease in the pipeline. (Pic: Rex)
Rebecca Ferguson, Series 7(13 of16)
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Rebecca kept in the spotlight post-X Factor after hitting the headlines thanks to her relationship with 18-year-old Zayn Malik from One Direction, who is six years her junior. She insisted she was "genuinely in love" with her fellow X Factor finalist but they split in summer 2011. Despite advertising Walkers crisps on the telly she's signed to Epic Records who have help steer Olly Murs and JLS on to chart success. Her album Heaven was released in December. (Pics: Wire Image)
Rhydian Roberts, Series 4(14 of16)
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The classically trained Welsh baritone had already been in the biz for a number of years before auditioning for The X Factor and he's continued to do well since. His debut album went platinum, he completed a 27-date solo tour of the UK, performed for Andrew Lloyd Webber's 60th birthday in Hyde Park and was even asked by Prince Charles to become a patron of The Prince's Trust. He's just released his third album and is set to join Grease the Musical on tour as well as reprising his role of Khashoggi in We Will Rock You. (Pic: Rex)
Rowetta Satchell, Series 1(15 of16)
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'Barking mad' Rowetta (Simon Cowell's words, not ours) has popped up on The Weakest Link, Celebrity Scissorhands and Footballers' Wives since leaving The X Factor but also continues to sing in musical theatre. She's featured in productions of The Best of Broadway, Christmas on Broadway and the Songs of Sister Act but her biggest recent claim to fame was being sampled on the Black Eyed Peas hit Boom Boom Pow. (Pic: Rex)
Same Difference, Series 4(16 of16)
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Love-em-or-hate-em smiley siblings Sean and Sarah left the competition and headed straight into the recording studio thanks to Simon Cowell but despite recording with some of the biggest names in pop - including Pete Waterman - the duo's debut album didn't exactly set the charts alight and they were quickly dropped. Undeterred, they've since released another album independently and were last seen touring Butlins up and down the land. (Pic: Rex)