请问这段视频的背景音乐叫什么？

英国的喜剧组合 Monty Python 的《Always Look on the Bright Side of Life 》
试听下载：http://mp3.baidu.com/m?f=ms&tn=baidump3&ct=134217728&lf=&rn=&word=Always+look+on+the+bright+side+of+life+Monty+Python&lm=0

歌词：
Some things in life are bad,
They can really make you mad,
Other things just make you swear and curse.
When you're chewing on life's gristle
Don't grumble, give a whistle.
And this'll help things turn out for the best.
And....
Always look on the bright side of life, (whistle)
Always look on the bright side of life, (whistle)
If life seems jolly rotten,
There's something you've forgotten,
And that's to laugh and smile and dance and sing.
When you're feeling in the dumps,
Don't be silly