It appears Britney Spears has rained on Lady Gaga's parade.Although this week's big new release is Gaga's sixth studio album Chromatica, Britney's previously unreleased song Mood Ring from 2016 made its way to the top of the US iTunes chart on Friday.Moon Ring was previously only available in Japan as a bonus track on her 2016 album Glory, but she decided to release it in the U.S.
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