Katie Melua doesn't know who, even or what, all of her songs are about.
The 'Nine Million Bicycles' singer is reluctant to explain how she interprets her tracks, because she feels everyone should draw their own personal conclusions from them.
She said: "I'm a bit dubious about messages in songs. Songs are just songs. When you listen to a song, you form a relationship with it. You associate it with how you feel or how you felt in the past. That's why songs mean different things to different people.
"Of course, when I write, I am influenced by my own relationships as well as the places I've been and the things I've seen. I don't sit down and decide in advance what the subject matter is going to be. Sometimes even I'm not sure exactly who or what some of my own songs are about."
The singer doesn't even enquire about songs written for her by other people, as she wants to take the lyrics and music of them and make them her own.
She added to the Yorkshire Post newspaper: "I've been asked if the song 'What I Miss About You' was about an ex-boyfriend. The lyrics were actually written by Andrea McKewan and I have no idea who she wrote them about.
"I didn't ask, I would never ask because once I adapt a song, it's mine. Once you hear it, it's yours."
Katie is touring the UK later this month.