The `SexyBack` hitmaker - who has not released a record since `Until the End of Time` in 2007 - admits he is currently focused on his acting career and though he claims to be constantly composing new songs, is uncertain when he will make a chart return.

Asked when he will release another record, he said: "Does a painter make a painting because he has to make it by December 21st? No, he doesn`t. It happens when it pours out of him. That`s how music is for me ... I never stop making music. I don`t know what else to tell you, except that I just don`t know in what capacity I want to be involved anymore ... All I`m saying is, in very simple terms, I`ll know when I know. And until I know, I don`t know when I`ll put another album out."

Despite enjoying acting, Justin believes he has to work even harder to land film roles because of his musical background.

Speaking about his new role in `The Social Network`, he told Entertainment Weekly magazine: "I did a marathon of testing for the film. I tested more than anyone. I have to fight against my music career - I`m cognizant of that. But I didn`t care. I loved the part and I wanted to work with David Fincher, the director, so bad that I was like, `We can read this scene butt-naked if you guys want.` "
sections: Celebrities