Actor Joaquin Phoenix has laughed off reports he is launching a singing career after playing country music legend Johnny Cash in movie biopic Walk the Line.

Phoenix, who sang in the film and on the accompanying soundtrack, admits he toyed with the idea of expanding into music while working on the movie, but ditched the idea as soon as it was over.

He says, "While I was filming I was really tempted.

"I'd go home and read about John, or sing, or record.

"But as soon as the job was done, I was through."