Coldplay entered a London studio Tuesday to begin work on their third album, the follow-up to the triple-platinum A Rush of Blood to the Head. The band is again working with producer Ken Nelson, who helmed both Rush of Blood and the British quartet's 2000 debut, Parachutes.

Nelson, frontman Chris Martin and guitarist Jon Buckland recorded demos for the album last fall in Chicago. In addition, the band cut a cover of the Pretenders' Christmas-themed "2,000 Miles" last year in New York. The song was available for a limited time as a paid download at coldplay.com, and benefited Future Forests and Stop Handgun Violence.

The new album probably won't be released until 2005, according to a label spokesperson, who adds that no live dates are expected from the band this year.

Next week, Coldplay will compete against the likes of Eminem and Beyoncé for the Record of the Year trophy at the 46th annual Grammy Awards (see "Jay-Z, Beyonce, Outkast, Pharrell Nab Most Grammy Nominations"). The band is nominated for "Clocks."

A live performance by Martin is also slated to show up on the soundtrack to the documentary "Mayor of the Sunset Strip." That album is due March 18.