Death Grips have called it a day, less than a month after dropping a surprise LP with Björk. The noise-rap trio posted a handwritten note detailing the reasons for their split on their Facebook page.

"We are now at our best and so Death Grips is over," the note explains. They add that all scheduled live dates have been cancelled but their double album, the powers that b, will be released as planned. 

In typical lo-fi style, the band have written it on a napkin: 

Is this the last time we'll see Death Grips? Who knows? The one thing that stayed constant about the band was their propensity for out-and-out chaos: dropping unexpected albums, abandoning performances and splitting up with labels. 

Some unimpressed fans are already taking the piss out of the unconventional goodbye note penned by the "conceptual art exhibition anchored by sound and vision":

The band's sudden breakup hasn't just disappointed fans. They were scheduled to play Fun Fun Fun Fest in Austin this year, but have left the organisers in the lurch for the second time – they cancelled their performance in 2013, too. This has prompted the festival to pen their own "conscious uncoupling" note to Death Grips:

The band were also scheduled to open for Nine Inch Nails and Soundgarden's forthcoming US tour, which opens in two weeks. Trent Reznor is not too happy about his opening act dropping out. Although, as he acknowledges, he should really have seen this coming. Maybe we all should have?