Roger Moore, best known for his film portrayal of tongue-in-cheek spy James Bond, walked out of the lead role of a stage musical Monday - a month before the premiere.

A London stage singing debut in Andrew Lloyd Webber's "Aspects of Love" was to be the toughest assignment of the man who played 007, the spy licensed to kill, on screen.But six weeks into rehearsals, the 61-year-old British actor with the baritone voice decided he was not up to the job.

"I now do not think the musical stage is for me," he told reporters. "After many hours of rehearsal and much soul-searching I have come to a most difficult decision."

The musical, which has already sold out for months ahead, is a love story.

Moore agreed to play a romantic aristocrat, George Dillingham, after Lloyd Webber heard him sing.

Lloyd Webber said: "I think perhaps that I underestimated the vocal demands of the role because I so much wanted Roger to play it. But I have to accept his judgment and recognize his right to protect his own high standards."