Washington, Sept 22 - Pop star Britney Spears' version of 'I Love Rock 'N Roll' has been named worst ever cover song.

The survey for car maker Seat revealed that the 28-year-old's attempt at the 1981 Joan Jett classic sold just 51,000 copies.

"When someone ruins a classic, it's the cause of much anger," the Daily Star quoted Luke Lewis, of NME.com, as saying.

Meanwhile, the Muse cover of Feeling Good topped the poll. (ANI)