'Torn' has a bit of a complicated history. Scott Cutler and Anne Preven, two members of alternative rock band Ednaswap, wrote the song along with producer Phil Thornalley in 1993. But since Ednaswap hadn't yet been formed, a Scandinavian group recorded 'Torn' first. Ednaswap finally released it themselves in 1995, and Natalie Imbruglia covered it two years later.

Ednaswap's dark version, from their self-titled debut album, has electric guitars and a long outro. And while that may have been how the band envisioned 'Torn' should sound, it was Imbruglia's lighter touch that took the song to a worldwide audience.

Her 1997 cover made the Top 5 in scores of countries, but even though it blanketed U.S. radio playlists, a Billboard technicality meant it only reached No. 42 on the Hot 100. Regardless, it earned Imbruglia a Grammy nomination for Best Female Pop Vocal Performance, and the success of the single also helped the album on which it appeared, 'Left of the Middle,' sell more than 7 million copies.

Listen to Natalie Imbruglia's Version of 'Torn'

Listen to Ednaswap's Version of 'Torn'