Lana Del Rey has admitted that she feels a level of uncertainty about her new album.

The 27-year-old singer is currently working on the follow-up to her 2012 debut Born to Die, but is unsure whether her new music will be an improvement on her previous efforts.

"When people ask me about it, I just have to be honest - I really don't know," Del Rey told Nylon.

"I don't want to say, 'Yeah, definitely - the next one's better than this one,' because I don't really hear a next one.

"My muse is very fickle,” she added, before referring to it as female. “She only comes to me sometimes, which is annoying."