2."Gold Digger" was originally meant to be sung by a woman and was offered to Shawnna, but she passed on it. However, Kanye West knew it'd be a hit, so he reworked the song and kept it for himself.
4."See You Again" by Wiz Khalifa feat. Charlie Puth was offered to Eminem first, but he passed because he was already invested in his songs for the movie Southpaw.
7.Pharrell Williams' "Happy" was originally recorded by Cee Lo Green and ready to be released, but some of the members on his team felt that he needed to focus on his album instead.
11."Black Widow" was partially written by Katy Perry and she intended it to be included on her album Prism, but she gave it to Iggy Azalea and Rita Ora instead.
12.Ed Sheeran originally wrote "Shape of You" for Rihanna, but then he realized the lyrics didn't sound like something she'd say, so he kept the song for himself.
15.Katy Perry was originally meant to sing "Pretty Hurts" but her team passed on the song, then it went to Rihanna but her team forgot to secure the song, so it finally went to Beyoncé.
16.Camila Cabello was originally featured on the Chainsmokers song "Closer" but had to turn it down because Fifth Harmony was about to put out an album, so Halsey did it instead.
