#40 “CLARITY” – Zedd f/Foxes
#39 “ADORE YOU” – Miley Cyrus
#38 “THINKING ABOUT YOU” – Calvin Harris f/Ayah Marar
#37 “SUMMERTIME SADNESS” – Lana Del Rey & Cedric Gervais
#36 “NEON LIGHTS” – Demi Lovato
#35 “CAN'T HOLD US” – Macklemore & Ryan Lewis f/Ray Dalton
#34 “HOW I FEEL” – Flo Rida
#33 “SLOW DOWN” – Selena Gomez
#32 “SAFE AND SOUND” – Capital Cities
#31 “PERFUME” – Britney Spears
#30 “XO” – Beyoncé
#29 “BLURRED LINES” – Robin Thicke f/Pharrell & T.I.
#28 “BRAVE” – Sara Bareilles
Break Out: “TAKE ME HOME” – Cash Cash f/Bebe Rexha
#27 “HOLY GRAIL” – JAY Z f/Justin Timberlake
#26 “ALONE TOGETHER” – Fall Out Boy
#25 “REPLAY” – Zendaya
#24 “UNCONDITIONALLY” – Katy Perry
#23 “YOUNG GIRLS” – Bruno Mars
#22 “APPLAUSE” – Lady Gaga
#21 “LOVE ME AGAIN” – John Newman
#20 “ROAR” – Katy Perry
#19 “HOLD ON, WE'RE GOING HOME” – Drake f/Majid Jordan
#18 “POMPEII” – Bastille
#17 “DARK HORSE” – Katy Perry f/Juicy J
#16 “SAY SOMETHING” – A Great Big World f/Christina Aguilera
#15 “WRECKING BALL” – Miley Cyrus
#14 “TEAM” – Lorde
Break Out: “HEY BROTHER” – Avicii
#13 “ROYALS” – Lorde
#12 “WHITE WALLS” – Macklemore & Ryan Lewis f/Schoolboy Q & Hollis
#11 “SWEATER WEATHER” – The Neighbourhood
#10 “STORY OF MY LIFE” – One Direction
2 For 1: “LIVE WHILE WE’RE YOUNG” – One Direction
#9 “LET HER GO” – Passenger
#8 “DO WHAT U WANT” – Lady Gaga f/R. Kelly
#7 “BURN” – Ellie Goulding
#6 “WAKE ME UP!” – Avicii
#5 “STAY THE NIGHT” – Zedd f/Hayley Williams
#4 “DEMONS” – Imagine Dragons
#3 “COUNTING STARS” – OneRepublic
AT40 Extra: “YOU BELONG WITH ME” – Taylor Swift
#2 “TIMBER” – Pitbull f/Ke$ha
#1 “THE MONSTER” – Eminem f/Rihanna