'Hit Me Baby One More Time' was originally for TLC? Chris Brown gave one of his songs to Rihanna? It's hard to imagine, but the people that made some songs famous were often never suppose to even touch them.
The track came from an unlikely source.
The pop singer, who publicly announced her split with Harris in June, reportedly wrote the song under the alias Nils Sjoberg, a rep for Swift has confirmed to People .
She reportedly penned the single at a piano and recorded it straight into her iPhone, before sending it to Calvin Harris.
The pair then recorded the full demo together and agreed to keep their collaboration a secret, according to TMZ .
However Taylor Swift was allegedly hurt after the Scottish DJ inferred that he didn’t want to work with her in the future.
“We haven't even spoken about [collaborating]. I can't see it happening though,” he told Ryan Seacrest in an interview at the time.
This was reportedly a breaking point in their relationship.
Calvin Harris has addressed the issue in a series of angry tweets: