CNN —In the music world, old grudges die hard, especially when it comes to devoted fans of a specific artist. On Friday, Britney Spears’ 2011 song “Selfish” – off her seventh album “Femme Fatale” from that year – reached no. 1 on the US iTunes chart, topping a new song of the same name from her former boyfriend Justin Timberlake, who dropped his “Selfish” track just the day before. On Saturday, Spears’ song was still holding steady at the no. “To this day, it’s one of the most agonizing things I have ever experienced in my life,” she added in her book.

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Persons: Britney Spears, ”, –, Justin Timberlake, Spears, Timberlake, ” reframed, Mickey, “, “ I’ve Organizations: CNN, iTunes, Mickey Mouse Club, New York Times