Once heard on stage , in the street and at weekends , whistling is on the decline . popularity of variety shows , working class jobs and availability of mobiles contributed . radio shows 70 percent heard more whistling twenty or thirty years ago . Popular in The Life of Brian and classic pop songs , now the trend is out .
Once heard on stage , in the street and at work , whistling is on the decline . End of variety shows , working class jobs and rise of mobiles contributed . Poll shows 70 percent heard more whistling twenty or thirty years ago . Popular in The Life of Brian and 1980s pop songs , now the whistle is out .