Many years ago, in Wichita, Kansas, a radio station started early in the morning of April 1 introducing popular songs from their standard playlist...but what came out each time was "When the Swallows Come Back to Capistrano"....within a short time, people were calling in, and the DJ would take the calls on the air, affecting confusion and misunderstanding. "Why, no sir, I don't understand. That was Patti Page singing "Let Me Go, Lover"!"

This went on all day...I suppose they must have played ""When the Swallows Come Back to Capistrano" a few hundred times, never once admitting anything.