A show tune is a song that is written to be a part of a musical or play. Musicals are plays where people sing and dance to tell a story. A show tune is a special kind of song that is used during the play to tell the story or explain how people are feeling. Sometimes, people like to listen to show tunes just for fun because they can be really catchy and enjoyable to sing along to. Show tunes can be about anything - love, friendship, sadness, happiness, or even just talking about how great it is to be alive!