Actor Jared Leto plans to unwind after playing John Lennon's killer Mark David Chapman by going on tour with his band Thirty Seconds to Mars.

The ALEXANDER star, who bulked up to play the chubby assassin in CHAPTER 27, will embark on his first official headlining tour in March (06).

Leto says, "After all these years on the road the fact that we still hadn't done a national headlining tour had become something that we were constantly asked about and encouraged to do.

"This is a tour that will offer a true alternative to the typical, mundane experience that seems to be readily available everywhere."