British singer/songwriter Anna Calvi has opened up about her secret battle with depression on her new album.

The star reveals she had been working on tracks for One Breath during a very dark period in her life and she used the creative process as a form of therapy, particularly for a song called Suddenly.

She tells NME magazine, "It's about a depression that you don't really know how to overcome, but you know that you don't want to feed it anymore, so you just walk away from it. Is it autobiographical? Yes. This record is more about things that are going on in my life."

One Breath is the follow-up to her 2011 self-titled debut, which earned her a nomination for Britain's prestigious Mercury Prize.