Such a flawless list, this is so hard to pick
Rules (Do Not Erase):
Save two songs
Vote once until the save again sign
Don't save the same song(s) in two rounds consecutively
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3. Iggy Azalea - Fancy (feat. Charli XCX)
4. Calvin Harris - I Need Your Love (feat. Ellie Goulding)
5. Rihanna - Umbrella (feat. Jay-Z)
7. Lily Allen - Hard Out Here
10. Taio Cruz - Dirty Picture (feat. Ke$ha)
12. Rihanna - California King Bed
14. Ellie Goulding - Hanging On (feat. Tinie Tempah)
16. Kerli - Zero Gravity
17. Shakira - Rabiosa (feat. Pitbull)
18. Rihanna - Cheers (Drink To That)
19. Jennifer Lopez - Dance Again (feat. Pitbull)
21. Ke$ha - Crazy Kids
22. Miley Cyrus - Wrecking Ball
23. Marina & The Diamonds - Hollywood
31. Beyoncé - Get Me Bodied
35. Florrie - Give Me Your Love
36. Porcelain Black - Naughty Naughty
39. Lady Gaga - G.U.Y.
40. Neon Hitch - Gold (feat. Tyga)
1. Christina Aguilera - Bionic
2. Rihanna - Stay (feat. Mikky Ekko)
3. Katy Perry - Birthday
4. Ke$ha - We R Who We R
5. Kylie Minogue - Timebomb
6. Beyoncé - Blow
7. Lady Gaga - Marry The Night
8. Lady Gaga - Artpop
9. Jennifer Lopez - Papi
10. Britney Spears - Criminal
11. Kelly Clarkson - Mr. Know It All
12. Foxes - Youth
13. Shakira - Dare (La La La)
14. Rihanna - Nobody's Business (feat. Chris Brown)
15. Foster The People - Pumped Up Kicks
16. Cher Lloyd - With Ur Love (feat. Mike Posner)
17. Natalia Kills - Mirrors
18. Britney Spears - Tik Tik Boom (feat. T.I.)
19. Florence and the Machine - Breath Of Life
20. Foster The People - I Would Do Anything For You
VOTE AGAIN
21. Foster The People - Helena Beat
22. Ellie Goulding - Lights
23. Lady Gaga - Electric Chapel
24. Neon Hitch - **** U Betta
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ELIMINATED:
ELIMINATED:
ELIMINATED:
(if I won't add more songs) 
So I put everything on shuffle and here is the first set 