Aerosmith wasn’t supposed to have “Don’t Wanna Miss a Thing,” Celine Dion was.

Leona Lewis turned down “Halo” and who took it? Beyonce.

“Toxic” was supposed to go to Kylie Minogue

“How Will I Know?” was originally meant for Janet Jackson, not Whitney Houston.

“Passenger,” “Black Widow” were written by Katy Perry but given to Britney Spears and Iggy Azalea respectively.

“Baby One More Time” was originally meant for TLC or the Backstreet Boys, but was given to Britney Spears.

“Umbrella” was originally for Britney Spears, Mary J. Blige, but given to Rihanna.

“Rock Your Body” was supposed to be for Michael Jackson, but then given to Justin Timberlake.

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“Hero” was almost taken by Gloria Estefan, not Mariah Carey.

“We Found Love?” It was originally for Nicole Scherzinger.

“Irreplacable” was supposed to be for Faith Hill, then given to Beyonce

“Boom Clap” was gonna go to Hilary Duff, but she didn’t have time to record it...

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“Go” by Grimes was also given to Rihanna, who didn’t take it.

“Since U Been Gone” was supposed to be for Pink or Hilary Duff...

Can you imagine? It’s kinda amazing.