British pop star and former "X Factor" contestant Leona Lewis is claiming that she originally recorded a better version of Rihanna’s smash single “We Found Love.” The “Bleeding Love” singer told the UK’s Daily Star that the track, which was written and produced by Calvin Harris, was initially intended for her album “Glassheart.”

“I worked with Calvin, and we recorded ‘We Found Love.’ But he went touring with Rihanna, and she ended up releasing it," said Lewis.

“I didn’t commit to it, because I wanted ‘Trouble’ to be my first single, so I think that was another reason they went with Rihanna. It was the same version and production, but mine’s better.”

There’s no denying that international fame and star power led Rihanna’s version of the song to hit No. 1 in 25 countries and that it fared far better than Lewis’ would have since, after six studio albums, Lewis is still vying for the spotlight in the music industry.

Disputes over nicked content have arisen throughout pop music industry: This is not the first time a famed musician has recorded a song or portion of a songs by lesser-known artists and reaped the benefits. In some cases, popular music stars of the moment have ripped off the work of earlier artists without giving the original recording due credit.

The early bird may get the worm, but the second mouse gets the cheese. Read on for five famous cases of musical plagiarism: