Britney Spears is still reveling in her ninth studio album, Glory, even four years after its release. Earlier this month, Spears' collection of sexy, sparkling pop confections -- including the singles "Make Me" and "Slumber Party" -- topped iTunes' Pop Albums chart after the superstar's ever-loyal Britney Army launched the #JusticeForGlory campaign on social media.
Spears later expressed her gratitude by issuing a sizzling new album cover shot by famed photographer David LaChapelle. Now, the Grammy winner has bestowed another gift upon fans: Friday's (May 29) surprise-drop of Glory's beloved bonus track "Mood Ring," previously only available in Japan.
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