I'm The One DJ Khaled feat. Justin Bieber Download 'I'm The One' on iTunes
It's been an incredible year of hit music, so join Capital as we round-up every number one from the Vodafone Big Top 40 over the last 12 months.
Flo Rida's 'Good Feeling', a former number one, topped the first chart of the year. He performed this track at Capital's Summertime Ball 2012 at Wembley Arena.
BRIT award winner Jessie J's sixth single stole the top of the chart position from Flo Rida with this upbeat number – its taken from her debut album 'Who You Are'.
On its fourth week in the chart, David Guetta and Australian singer Sia climb to No. 1, pinching the top spot from Brit Jessie J. David Guetta also was crowned 2012's most streamed male artist on online service Spotify.
Gotye, a Belgian-Australian, achieved number ones in 25 countries with this memorable single. It's the most downloaded track of 2012 and was number one in the Big Top 40 for a massive six weeks.
Chris Brown's catchy dance track was the first cut from his studio album 'Fortune'. The album features collaborations with stars like David Guetta and Will.i.am.
This track from the star's album 'Tomahawk Technique' stayed in the big top 40 for a consecutive 12 weeks. The official music video was filmed in an airport.
Vevo's most viewed video of the year, 'Call Me Maybe' was number one for three weeks and stayed in the Big Top 40 for six months. It was the singer's first UK number one, after being signed to Justin Bieber's record label earlier this year.
The X Factor mentor and judge achieved a number one with her debut single 'Young', co-written by her former boyfriend, N-Dubz star Fazer. It comes from her album 'The Female Boss'.
Rita Ora knocked Tulisa off the top spot with her collaboration with London born Rapper Tinie Tempah, staying at the top spot for a fortnight. The singer kicks off her 'Radioactive Tour' in early 2013.
Fun. are Nate Ruess, Andrew Dost and Jack Antonoff, a US indie pop band from New York. 'We Are Young' reached the number one spot after six weeks in the chart's top ten.
The Swedish singer won 2012's Eurovision Song Competition, gaining a total of 372 points. 'Euphoria' remained in the chart for four weeks.
East London foursome Rudimental are Piers Agget, Kesi Dryden, Amir Amor and DJ Locksmith. This feel-good track bumped Eurovision's victor to enjoy 22 consecutive weeks in the Vodafone Big Top 40.
Written and produced for Cheryl by Scottish DJ Calvin Harris, 'Call My Name' was number one in June 2012. It was the first single to be released from Cole's third studio album, 'A Million Lights', and knocked Rudimental off the top spot.
The US Band followed up their massive track 'Moves Like Jagger' with 'Payphone', the lead single from the their forth studio album, 'Overexposed'. It features US rapper Wiz Khalifa, who also appeared on the 2011 track 'Black And Yellow'.
The Black Eyed Pea ended Maroon 5's time at the top of the chart after just one week with 'This is Love', featuring Eva Simons. The track's official video shows Will.i.am playing the piano and singing in front of London's Tower Bridge.
Taken from his album 'Fortune', Chris Brown stayed at number one for just a week with this song in the summer of 2012.
This was the first track of the year to re-climb back to number one after being knocked off the top spot. It's taken from The Voice UK coach's upcoming fourth album '#Willpower'.
A remix by Calvin Harris gave Florence and the Machine her first number one on the Vodafone Big Top 40. The instrumental version of the song was used extensively during coverage of the London 2012 Olympic Games.
Calvin Harris teamed up with rapper friend Example for this catchy track, which knocked his remix of Florence and The Machine off the top spot. It also follows his duet with Ne-Yo, 'Let's Go'.
One of the iconic songs of the summer, Wiley's 'Heatwave' made it to the top spot after initially entering the chart at number two. The grime star has previously had chart success with 'Wearing My Rolex' and 'Never Be Your Woman' which featured Emeli Sande.
'How We Do' is Rita's third number one single on the Vodafone Big Top 40, knocking Wiley off the top spot. It comes from her debut album 'Ora' and stayed in the chart for a consecutive 13 weeks.
Sam and the Womp are a three-piece music group who formed in 2009, and 'Bom Bom' was their debut single. It went straight to number one in its first week of release.
A cut from their debut album 'DNA', 'Wings' entered the chart in August 2012 at number one, bumping Sam and his Wompers from the top. Jesy, Perrie, Leigh-Anne and Jade all helped write the track.
The lead single from Pink's new album 'The Truth About Love' stole the number one position from the Little Mix girls. In the vintage styled music video, the 'Who Knew' singer gets her revenge on an ex-lover.
Ne-Yo's track initially entered the chart at number five, but climbed to number one in September 2012. The track is the first to be lifted from his new album 'R.E.D.'
The Irish trio collaborated with singer Danny O'Donoghue's fellow vocal coach on The Voice UK Will.i.am on this ballad. It stayed at the top of the chart for one week.
The official video for this track is the most viewed video on YouTube, with over one billion hits. It has been covered and parodied numerous times and stayed in the chart's top ten for a consecutive eleven weeks.
Liam, Zayn, Niall, Louis and Harry achieved a number one with the lead single from their second album, 'Take Me Home'. The music video sees the boy band splashing around in a giant paddling pool, and was filmed in Kent.
This year's official Bond track, which was number one in October, reportedly took Adele just ten minutes to write the song's basic structure. It knocked One Direction off the top spot.
This track stayed at the chart's prime position for two weeks. The official video was filmed during the dance trio's final ever UK concert at Milton Keynes Bowl on 14th July, and features lasers and fireworks.
The London born rapper collaborated with artist Emeli Sande on this slow track, which they wrote together. It was Labrinth's first number one single and was performed by the pair on The X Factor 2012.
'Candy' was the Take That star's first single from his ninth studio album, 'Take The Crown' and was co-written with Gary Barlow. In Germany, 'Candy' broke an airplay record by being played more times during a week than any other song ever.
Taken from his latest album 'Unorthodox Jukebox', this was Bruno Mars' only number one in the Vodafone Big Top 40 in 2012. He performed it as part of his set at Capital's Jingle Bell Ball 2012.
Olly Murs knocked Bruno Mars off the top spot with his hit single 'Troublemaker', and stayed there for two weeks. The video sees Olly repeatedly running into a girl who causes trouble everywhere she goes.
The track snuck back into the top spot again, after dropping to number eight in the Vodafone Big Top 40.
The biggest selling X Factor winner's track of all time, 'Impossible', is a cover of Shontelle's original song. James Arthur performed it on the show when he was announced as the winner.
The Christmas number one spot went to the Justice Collective, a charity song to remember the victims of the Hillsborough disaster. Artists like Robbie Williams, Andy from Lawson and Mel C appear on the track.