19. Bon Iver - 'Holocene'. The song title comes from both a Portland bar and (here comes the science bit) the current climactic era, which began some 12,000 years ago and follows on from the last major Ice Age. Listen.
18. Adele - 'Rolling In The Deep (Jamie xx Remix)'. Adele said: "I wrote it as a sort of 'fuck you.'" Listen.
17. Bombay Bicycle Club - 'Shuffle'. The song was originally written by Jack Steadman in the late '00s and then re-jigged for the album. Listen.
16. Metronomy - 'The Bay'. Joe Mount called it "the most tongue-in-cheek song on the record." Listen.
15. M83 - 'Midnight City'. Anthony Gonzalez described the creature on the cover as: "a crazy looking alien, a sort of mix of owls and E.T." Listen.
14. The Vaccines - 'If You Wanna'. Justin Young said: "The lyrics are pretty defeatist, maybe even slightly pathetic." Listen.
13. The Vaccines - 'Post Break-Up Sex'. Justin Young said: "Hopefully it's interpreted as frank rather than crass!" Listen.
12. SBTRKT feat Little Dragon - 'Wildfire'. SBTRKT's real name is Aaron Jerome. Listen.
11. Florence And The Machine - 'Shake It Out'. Flossie admitted that the song is about a hangover and waiting to get rid of it. Listen.
10. Lana Del Rey - 'Video Games'. She said the track was about "A boy. I think we came together because we were both outsiders." Listen.
9. Noel Gallagher’s High Flying Birds - 'If I Had A Gun'. This was intended as the first single, but Noel thought it sounded too much like Oasis. Listen.
8. Foster The People - 'Pumped Up Kicks'. FTP's Mark Foster said the song was: "about a kid that basically is losing his mind and is plotting revenge." Listen.
7. Kasabian - 'Days Are Forgotten'. The band got L.L Cool J to appear on the remix. Listen.
6. The Horrors - 'Still Life'. This was the first track the band wrote for the album 'Skying'. Listen.
5. Katy Perry - 'Last Friday Night (TGIF)'. K-Pez called the song a "no brainer." Listen.
4. Noel Gallagher's High Flying Birds – 'AKA…What A Life!'. Noel called it "a disco tune." Listen.
3. Arctic Monkeys - 'The Hellcat Spangled Shalalala'. Most of the stock of this top three single was destroyed in the PIAS fire earlier in the year. Listen.
2. The Strokes - 'Under Cover Of Darkness'. Julian Casablancas said of the track: "it's about someone who works in the military and has a girlfriend." Listen.