Tove Styrke: The Swedish electro-pop artist is reluctant to dwell too much on her Swedish Idol beginnings. "Its really hard to talk about music and a thing like Swedish Idol at the same time," she told Gigwise last year, "because they have nothing to do with each other.� Like it or not though, the show gave her the platform to make some of the most enjoyable and cohesive left-field pop of 2015. It�s not every day, after all, the someone writes a pop song inspired by The Matrix that's about smashing the patriarchy.
Beyonce: At this point in Beyonce�s career, most people have forgotten that she was even in one of the most successful girl bands of the �90s (Destiny�s Child, obviously), let alone the fact that she got her start on a show called Star Search - the largest talent show on national TV at the time. With her latest album, Lemonade, she proved her commitment not just to being a popstar, but to changing what it means to be one.
One Direction: Held up as the poster boys (quite literally) of talent show success, One Direction can�t do much right in many people�s eyes. Their phenomenal success, though, didn�t come about by accident. Nor did they simply fool a generation of young fans with good looks and charisma. That helped, sure, but so did their succession of catchy pop hooks, their distinctive voices and the consistent hard work they�ve poured into their careers. Also, their recent single, �History�, is a banger.
Zayn Malik: The mysterious one from One Direction took something of a leap of faith when he decided to part ways with one of the most successful bands of all time - but it seems to have paid off. His debut solo album, Mind Of Mine, was a little too poe-faced for its own good, but it clearly signposted where Malik intends to go, and we have every intention of following him there.
Otis Redding: Now considered one of the most important artists in the history of soul - despite the fact that his career, and his life, were cut short by a plane crash when he was just 26 - Redding started out as a talent show regular in Macon, Georgia. In fact, he won fifteen in a row before securing a record deal - though sadly, they weren�t televised.
Little Mix: If you want an example of a nigh-on perfect pop album, look no further than Little Mix�s latest release. Get Weird - which navigates the tricky balance between earnest balladry and stadium anthems without ever sounding stale or cynical - earned the former X Factor winners their rightful place as one of the best girl bands around at the moment.
Carrie Underwood: As one of the few country artists you�ll have probably heard of even if you have no interest in country music, Underwood carries quite the burden of responsibility on her shoulders. She�s got it nailed at this point though, and �Last Name� and �Before He Cheats� - the perfect angry karaoke tunes - will never, ever get old.
Adam Lambert: When the American Idol contestant joined Queen as their temporary touring frontman, the news was met with more than a few raised eyebrows. Five years on, though, and he�s proven his mettle as Freddie Mercury�s successor (though no-one, of course, could ever truly replace him) - all while peddling his own successful solo career.
Carly Rae Jepsen: If you live outside of Canada, you probably didn�t even realise that Jepsen started out on Canadian Idol at the age of 21. It was a few years before her breakout hit, the ubiquitous �Call Me Maybe�, catapulted her beyond Canada�s borders. The 'one-hit wonder' label was unthinkingly applied to her before she�d even announced her next single, but the success of her 2015 album, Emotion, soon shut her critics up. Well, a little bit at least.
Astrid S: �People look at me like I�m an alien,� the Norwegian pop-noir sensation told Gigwise at the start of this year. Well if that�s true, then we can only hope there�s more extra-terrestrial life out there. She first landed on earth on Norwegian Pop Idol.
Kelly Clarkson: With a powerhouse voice, consistently impactful songs, and a resolute disinterest in playing the music industry�s game, Clarkson has quietly (and loudly) kept her position as one of the world�s biggest popstars for over a decade now, since winning American Idol way back in medieval times (2002).
Jennifer Hudson: After a successful few years following her appearance on American Idol in 2004, Hudson took a quick break in order to go and win an Academy Award. As you do. Despite a horrific personal tragedy in 2008, she remains one of the mainstays in the world of R&B.