Bill Murray is to perform at the Sydney Opera House later this year.

The Hollywood veteran is to sing and read classics from Mark Twain and Ernest Hemingway as part of his New Worlds show when he visits Australia in November, when he will also be promoting a new movie.

Murray will appear alongside acclaimed German-American cellist Jan Vogler, with whom he has been playing to sold-out audiences in America on the back of their 'New Worlds' album.

The duo began working together following a chance meeting at an airport, according to the Daily Telegraph newspaper in Australia, with Bill said to have commented on the size of Jan's cello.

Despite being one of the best-known performers in Hollywood, Bill is almost equally popular for his unconventional lifestyle.

However, the 67-year-old star actor has insisted that his relaxed approach to life actually helps him as an actor.

Of his attitude on set, he previously explained: ''There are people who want to be your friend right away. I say, 'We're not gonna be friends until we get this done. If we don't get this done, we're never going to be friends, because if we don't get the job done, then the one thing we did together that we had to do together we failed.'

''People confuse friendship and relaxation. It's incredibly important to be relaxed - you don't have a chance if you're not relaxed. So I try very hard to relax any kind of tension. But friendship is different.''

What's more, Bill revealed he considers making any movie to be an achievement, irrespective of whether it's good or bad.

He shared: ''Nobody cares [what goes into making a movie]. It's like talking about the difficulties of fame. Nobody gives a s**t. No one could care less.

''But it's an amazing triumph even to make a bad movie. Even a crap film is really an extraordinary achievement. You're taking a two-dimensional object and making it three-dimensional. The number of people. The number of days. The number of cuts...''