The Oscar Mayer Bologna song is a jingle that has been used by the Oscar Mayer company to advertise its bologna since the 1960s. The jingle is sung to the tune of the children's song "The Farmer in the Dell," and it features a group of children singing about Oscar Mayer bologna. The jingle has been used in various commercials and marketing campaigns over the years, and it has become one of the most recognizable jingles in the United States.