Legendary songwriter Bob Dylan fears his songs are nothing more than the musing of celestial beings.

The KNOCKIN ON HEAVEN'S DOOR rocker is convinced he has been possessed by ghosts during key writing periods, but he has never been scared and insists it is important not to fight supernatural occurrences.

He says, "It's like a ghost is writing a song like that. It gives you the song and it goes away. You don't know what it means.

"Except the ghost picked me to write the song."