The Peanut Vendor (original title: El Manisero) is a Cuban song based on a street-seller's cry, and known as a pregón. It is possibly the most famous piece of music created by a Cuban musician. The Peanut Vendor has been recorded more than 160 times, sold over a million copies of the sheet music, and was the first million-selling 78rpm of Cuban music. The Beatles covered it during the Get Back sessions on January 10th, 1969.
Here's a serious version: