#20. Jason Mraz - "93 Million Miles"

(Photo by Kevin Kane/Getty Images)

#19. Ellie Goulding - "Lights"

(Photo by Christopher Polk/Getty Images)

#18. Imagaine Dragons - "It's Time"

(Photo by Jason Merritt/Getty Images)

#17. Maroon 5 - "Daylight"

(Photo by Christopher Polk/Getty Images)

#16. Phillip Phillips - "Home"

(Photo by Olivier Douliery-Pool/Getty Images)

#15. Alex Clare - "Too Close"

(Photo by Ethan Miller/Getty Images)

#14. Adele - "Skyfall"

(Photo by Gareth Cattermole/Getty Images)

#13. fun. - "Some Nights"

(Photo by Christopher Polk/Getty Images)

#12. Taylor Swfit - "I Knew You Were Trouble"

(Photo by EMMANUEL DUNAND/AFP/Getty Images)

#11. Hunter Hayes - "Wanted"

(Photo by CHRISTOPHER BERKEY/AFP/Getty Images)

#10. Kelly Clarkson - "Catch My Breath"

(Photo by Kevin Winter/Getty Images)

#9. Muse - "Madness"

(Photo by Andreas Rentz/Getty Images )

#8. Ed Sheearan - "The A Team"

(Photo by Theo Wargo/Getty Images)

#7. OneRepublic - "Feel Again"

(Photo by Michael Kovac/Getty Images)

#6. Mumford & Sons - "I Will Wait"

(Photo by Michael Buckner/Getty)

#5. Bruno Mars - "Locked Out Of Heaven"

(Photo by Bryan Bedder/Getty Images)

#4. P!nk - "Try"

(Photo credit should read OLIVER LANG/AFP/Getty Images)

#3. Lumineers - "Ho Hey"

(Photo by Jason Merritt/Getty Images)

#2. Maroon 5 - "One More Night"

(Photo by Kevin Winter/Getty Images)

#1. Of Monsters and Men - "Little Talks"

(Photo by Jordan Strauss/Getty Images)