In which Monty Python film do you hear the song 'Always look on the bright side of life'?

Explanation

The famous Monty Python group included John Cleese, Michael Palin and not least Terry Gilliam, who later went on to direct big films such as 'Fear & Loathing in Las Vegas' and '12 Monkeys'. John Cleese enjoyed success with the BBC tv-series 'Fawlty Towers'. The Monty Python-boys made several films, including 'Monty Python and the Holy Grail', 'Monty Python Live at the Hollywood Bowl' and not least 'Life of Brian', known for the song 'Always Look on the Bright Side of Life' and an alternative version of Jesus' life.