Bloc Party premiered its new single, "Mercury," this afternoon (July 7) on Zane Lowe's BBC Radio One show.

Bloc Party premiered its new single, "Mercury," this afternoon (July 7) on Zane Lowe's BBC Radio One show. The track is a big departure from the band's skittish Britpop, incorporating cacophonous horns and percussion alongside disorienting sound effects.

According to a spokesperson, the song may or may not appear on Bloc Party's third album, which is expected before the end of the year via Atlantic. "Mercury" will be released as a single Aug. 11 in the U.K., with a U.S. release date to follow.

Frontman Kele Okereke told Lowe, "We are making the record I always wanted us to make, so we just can't wait for it to be done."

The new album is the follow-up to 2007's "A Weekend in the City," which has sold 146,000 copies in the United States, according to Nielsen SoundScan.