A novelty song is a type of song built upon some form of novel concept, such as a gimmick, a piece of humor, or a sample of popular culture. Novelty songs partially overlap with comedy songs, which are more explicitly based on humor, and with musical parody, especially when the novel gimmick is another popular song. Novelty songs achieved great popularity during the 1920s and 1930s. They had a resurgence of interest in the 1950s and 1960s. The term arose in Tin Pan Alley to describe one of the major divisions of popular music; the other two divisions were ballads and dance music. Humorous songs, or those containing humorous elements, are not necessarily novelty songs.

Comedy music or musical comedy is a genre of music that is comical, comedic or humorous in nature. Its history can be traced back to the first century in ancient Greece and Rome, moving forward in time to the Medieval Period, Classical and Romantic eras, and the 20th century. Various forms of comedic musical theatre, including "musical play", "musical comedy", "operetta" and "light opera", evolved from the comic operas first developed in late 17th-century Italy. Popular music artists in the 20th century interested in comedy include Allan Sherman, Frank Zappa, Tiny Tim, Barenaked Ladies, Randy Newman, and "Weird Al" Yankovic. Artists in the 21st century include Tenacious D, Flight of the Conchords, The Lonely Island, Ninja Sex Party and The Axis of Awesome.