Lorde (Royals) – 51,022
Katy Perry (Roar) – 28,656
Miley Cyrus (Wrecking Ball) – 27,992
Avicii (Wake Me Up) – 21,282
Lady Gaga (Applause) – 13,548
Britney Spears (Work B**ch) – 12,310
Katy Perry (Walking On Air) – 11,022
One Republic (Counting Stars) – 9,837
Luke Bryan (That’s My Kind of Night) – 10,133
Passenger (Let Her Go) – 8,682
Panic! At the Disco (Miss Jackson) – 2,585
John Legend (All of Me) – 2,499

For instance, Katy Perry’s single ROAR had 28,656 paid downloads on iTunes within the last 24 hours. Lorde’s single Royals had 51,022 paid downloads.