Now That’s What I Call 21st Century! - full tracklisting revealed.

Now! have teamed up with the Official Charts Company to launch the new album as part of Decade of Digital – a celebration marking 10 years since the first legitimate digital music services and the UK’s Official Download Chart launched in 2004.

Yes, it really is 10 years since the CD started getting a little nervous thanks to the introduction of an alternative format, waiting in the wings to change the way we buy music for ever.

In 2004, legal digital downloads arrived in the UK with services including iTunes Europe, 7 Digital Music and MyCokeMusic kicking off for the very first time.

The Official Download Chart would make its debut later that year – with Westlife’s Flying Without Wings claiming the top spot. Over a billion digital singles have been sold in the UK since, so the CD was right to be worried!

To celebrate 10 years of being able to download music at the click of a button – or the tap of a screen – Now That’s What I Call Music! have unveiled a new bumper collection of hits from the last decade, Now That's What I Call 21st Century is out Easter Monday 21 April.

The 62-track extravaganza includes 43 Official Singles Chart Number 1 hits, including 2013’s top seller Blurred Lines, from Robin Thicke FT T.I. and Pharrell.

Other huge hits from the last ten years who make a showing include Carly Rae Jepsen’s Call Me Maybe, Bruno Mars’ Just The Way You Are (Amazing), Pharrell’s Happy and Take That’s Rule The World.

Lady Gaga manages to get two of her monster Number 1s on this very special Now! Million sellers Poker Face and Bad Romance have made the final cut.

More activity around the Decade Of Digital celebration (which is being co-ordinated by the Official Charts Company, on behalf of record labels' association the BPI and the Entertainment Retailers Association) will be unveiled next week.

See full tracklisting:

1. Robin Thicke FT T.I. & Pharrell – Blurred Lines
2. Maroon 5 FT Christina Aguilera – Moves Like Jagger
3. The Black Eyed Peas – I Gotta Feeling
4. Pharrell Williams – Happy (from Despicable Me 2)
5. Carly Rae Jepsen – Call Me Maybe
6. Avicii – Wake Me Up
7. LMFAO FT Lauren Bennett & GoonRock – Party Rock Anthem
8. Psy – Gangnam Style
9. Jessie J – Price Tag
10. Lady Gaga – Poker Face
11. Fun. FT Janelle Monáe – We Are Young
12. One Direction – What Makes You Beautiful
13. Katy Perry – Firework
14. Pitbull FT Ne–Yo, Afrojack & Nayer – Give Me Everything
15. Naughty Boy FT Sam Smith – La La La
16. Rihanna – Diamonds
17. Labrinth FT Tinie Tempah – Earthquake
18. La Roux – In For The Kill
19. Chris Brown FT Benny Benassi – Beautiful People
20. Usher FT will.i.am – OMG
21. Gotye FT Kimbra – Somebody That I Used To Know
22. Bruno Mars – Just The Way You Are
23. James Arthur – Impossible
24. Labrinth FT Emeli Sandé – Beneath Your Beautiful
25. Alicia Keys – Empire State Of Mind (Pt. II) Broken Down
26. OneRepublic – Counting Stars
27. Coldplay – Paradise
28. The Script – The Man Who Can't Be Moved
29. Take That – Rule The World
30. James Morrison FT Nelly Furtado – Broken Strings
31. Owl City – Fireflies
32. Olly Murs – Dance With Me Tonight
33. B.o.B FT Hayley Williams – Airplanes
34. Jason Mraz – I'm Yours
35. Ellie Goulding – Your Song
36. Alexandra Burke – Hallelujah
37. P!nk FT Nate Ruess – Just Give Me A Reason
38. Christina Perri – Jar Of Hearts
39. Leona Lewis – Bleeding Love
40. Journey – Don't Stop Believin'
41. Rihanna – Only Girl (In The World)
42. Lady Gaga – Bad Romance
43. Cee Lo Green – Forget You
44. LMFAO – Sexy And I Know It
45. Taio Cruz – Dynamite
46. Maroon 5 FT Wiz Khalifa – Payphone
47. Olly Murs FT Flo Rida – Troublemaker
48. Swedish House Mafia FT John Martin – Don’t You Worry Child
49. David Guetta FT Sia – Titanium
50. will.i.am FT Britney Spears – Scream & Shout
51. Bastille – Pompeii
52. The Killers – Human
53. Emeli Sandé – Next To Me
54. Jessie J – Domino
55. Cheryl Cole – Fight For This Love
56. Rudimental FT John Newman – Feel The Love
57. Tinie Tempah – Pass Out
58. Rizzle Kicks – Mama Do The Hump
59. Yolanda Be Cool & DCup – We No Speak Americano
60. Robbie Williams – Candy
61. Black Eyed Peas – Meet Me Halfway
62. The Script FT will.i.am – Hall Of Fame