Spotify (04/30):

Blackout – 873,612
Circus – 753,358
In the Zone – 739,286
...Baby One More Time – 620,029
Oops!...I Did It Again – 584,981
Femme Fatale – 351,910
Britney – 248,901
Britney Jean – 170,498
Glory – 151,885

— Britney Daily Streams (@britneyonstream) May 1, 2021