Western Soundtrack Song

For over a year I have been asking and searching for a western soundtrack song that I heard on a commercial. I believe the commercial was a Crunch commercial, but I remember that it had a group of men whistling with a trumpet, and another group saying: heh.....ha........heh.........ha............

can SOMEONE PLEASE tell me the name of this song or the MOVIE it came from!?

dmknappy, June 11, 2006; 7:30 PM