Whistle down the wind

Posted by James Hearn on June 07, 2000

I realise "Whistle down the wind" is the title of a book and subsequent Lloyd-Webber musical but I was wondering if that was the source of its origination and what it really means!I'm interested in using it as a song lyric because I love the way it sounds but it would help if I knew what I was writing about!!Can anyone help? Thanks