New York, United States —Bjork has said she is working on new music after cutting short a tour for her deeply personal last album "Vulnicura," which she said had taken an emotional toll.

"I have started writing new songs and feel the best, most natural pathway to go is to let this beast flow its natural course and start anew," the Icelandic singer wrote over the weekend on Facebook.

Bjork in January released "Vulnicura," a string-backed exploration of her feelings as her long relationship with US artist Matthew Barney dissolved.

Bjork initially only scheduled intimate shows for the album at Carnegie Hall and other New York venues, which were accompanied by a retrospective at the Museum of Modern Art.

She has since played larger shows but her management announced last week that due to a "scheduling conflict" she was cutting the tour short, scrapping two festival appearances in France and one in Iceland.

"Singing this album has been intense and the internal clock of it different to the other ones," wrote Bjork, who released the album digitally two months ahead of schedule after an online leak.

"It has sort of had to behave in its own little way. Both the urgency of the leak and now this sudden closure for reasons beyond my control is characteristic of that," she wrote.

Bjork -- known for her wide experimentation -- did not reveal the direction of her upcoming work or a release date.

Her last performance for the small "Vulnicura" tour took place Friday at the Wilderness Festival in the forest of Oxfordshire in England.