Kylie Minogue: Toxic

The slinky, surf-guitar-heavy masterpiece Toxic was originally offered to Australian pop princess Kylie Minogue for her album Body Language. Minogue heard the demo but chose to turn it down, a decision she later admitted she didn't regret because the song was clearly meant to belong to Britney Spears. Spears snapped it up, securing her first-ever Grammy Award for Best Dance Recording.